Jun 23, 2026
Automate Invoice Data Entry from PDF to Spreadsheet
To automate invoice data extraction to a spreadsheet (Excel or Google Sheets), you can use either a…
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Some pieces exist in English, others only in Russian or Spanish. When an article is available in another language only, the card says so.
Automation and scripts 18
Python, n8n, API integrations — the routine you should not be doing by hand.
Jun 23, 2026
Connecting Google Sheets to a REST API with Python
This article provides a direct, technical guide to connect Google Sheets with a REST API using…
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Jun 23, 2026
How to Connect Stripe Webhooks to Google Sheets Using Python
This guide shows you how to capture Stripe events (such as payment_intent.succeeded )…
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Jun 23, 2026
How to Build an n8n Workflow to Send Slack Alerts for New Airtable Records
This technical guide explains how to set up a lightweight, two-node n8n…
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Jun 23, 2026
Python Script to Convert PDF to Excel Spreadsheet
To extract tabular data from a PDF and save it as an Excel spreadsheet (.xlsx) using Python, you can…
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Jun 23, 2026
Python Script to Download All Images from a Website
This guide provides a concise Python script to programmatically download images from a specified…
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Jun 23, 2026
Python Script to Merge Multiple CSV Files into One Excel Workbook
To merge multiple CSV files into a single Excel workbook using Python, the most…
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Jun 23, 2026
Python Script for Bulk File Renaming and Organization
Core Concepts and Safety Precautions Automating file operations requires careful execution.…
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Jun 22, 2026
Automating Daily Reports to Telegram with n8n or Make
Automating daily reports to Telegram keeps your team informed without manual intervention. This…
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Jun 22, 2026
Automating Excel Reports with Python and openpyxl: A Practical Guide
Python's openpyxl library provides robust capabilities for programmatically…
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Jun 22, 2026
How to Automate Form Submissions Into Your CRM Using n8n Webhooks
Automating form submissions directly into your CRM eliminates manual data entry and…
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Jun 22, 2026
Connect Shopify to a CRM via API (Orders and Customers Sync)
To synchronize Shopify customer and order data with a CRM (such as HubSpot, Salesforce…
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Jun 22, 2026
Connect Google Sheets to Telegram with n8n: Step-by-Step Guide
This guide shows you how to automatically send data from a Google Sheet to a Telegram…
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Jun 22, 2026
How to Fix Python Memory Crashes When Processing Large Files
Python scripts crash with MemoryError or get killed by the operating system (OOM killer)…
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Jun 22, 2026
How to Scrape Website Data to Excel with Python (Requests + Pandas)
To scrape data from a website and export it to Excel using Python, you need three…
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Jun 22, 2026
How to Stop Selenium Scrapers from Getting Blocked
Websites block Selenium because default configurations broadcast automation signatures (such as…
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Jun 22, 2026
Syncing Data Between Two APIs in Python (Idempotent with Retries)
Syncing data between a source API and a destination API requires handling two major…
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Jun 22, 2026
Webhook Not Receiving Data: A Step-by-Step Debugging Guide
When a webhook fails to deliver data, the issue typically lies in one of three areas: the…
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AI agents and chatbots 9
RAG over your own documents, hallucinations, prompts, agent-readiness.
Jun 25, 2026
How to Add an AI Product-Recommendation Assistant to Your Online Store (RAG, 2026)
Practical guide to building an AI shopping assistant that understands your catalog: RAG over a product feed, real-time stock/price sync, alternatives and cross-sell, and handoff to a…
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Jun 23, 2026
Build a Chatbot That Answers Questions from a PDF Manual
To build a chatbot that queries a PDF manual, you use a Retrieval-Augmented Generation (RAG)…
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Jun 23, 2026
Building a Customer Support AI Chatbot from a Knowledge Base
To build a customer support chatbot that answers questions using your company's…
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Jun 23, 2026
How to Reduce Hallucinations in a RAG Chatbot
Reducing hallucinations in Retrieval-Augmented Generation (RAG) pipelines requires systematic…
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Jun 23, 2026
How to Write Better Prompts for ChatGPT to Get Accurate Answers
To consistently get accurate, hallucination-free answers from ChatGPT, you must…
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Jun 22, 2026
How to Build a Chatbot That Answers From Your Company Documents
To build a chatbot that answers questions using your company's proprietary documents…
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Jun 22, 2026
Docling: Turn Your Documents Into AI-Ready Data (Locally, Tables Intact)
How Docling converts PDFs, Word, Excel and scans into clean Markdown/JSON for RAG - locally, with table structure preserved. Practical setup, OCR for any language, limits, and where it…
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Jun 22, 2026
Building a RAG Chatbot from PDF Documents: A Practical Implementation Guide
Retrieval-Augmented Generation (RAG) optimizes Large Language Model (LLM)…
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May 7, 2026
How to Make Your Website AI-Agent Readable in 2026 (llms.txt, MCP Cards, Structured Data)
Practical guide to AI-agent readiness for indie sites — llms.txt format, MCP server cards, JSON-LD structured data, robots.txt for AI crawlers. What ChatGPT, Claude, Perplexity…
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Telegram bots 6
Payments, webhooks, schedules and crashes — practice, not hello world.
Jun 23, 2026
How to Create a Telegram Bot to Auto-Reply Based on Keywords
Setting up a keyword-based auto-responder on Telegram requires a Telegram bot token and a…
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Jun 23, 2026
Building a Telegram Bot for Scheduled Channel Messages
This article outlines the technical steps to create a Telegram bot that sends scheduled…
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Jun 22, 2026
How to Accept Payments in a Telegram Bot Using Python
Telegram allows bots to accept payments for goods and services directly within the chat…
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Jun 22, 2026
Telegram Bot Crashing: Common Causes and Fixes
Common Causes of Bot Crashes Unhandled Exceptions: Code errors not caught, leading to process…
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Jun 22, 2026
How to Debug a Telegram Bot Webhook Not Working
When a Telegram bot stops responding to webhook updates, the issue is almost always a mismatch in SSL…
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Jun 23, 2026RU
Автоматическое скачивание и пересылка файлов через Telegram-бота
Для автоматизации процесса скачивания и пересылки файлов в Telegram используются два…
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WordPress and WooCommerce 8
Broken checkouts, migrations, the honest cost of maintenance.
Jun 23, 2026
Fixing WooCommerce Emails Not Sending: A Technical Guide
1. Verify WooCommerce Email Settings Ensure that the specific email notifications are…
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Jun 22, 2026
WooCommerce Checkout Not Working: A Technical Debugging Checklist
When a WooCommerce checkout fails to load, spins indefinitely, or blocks payments…
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Jun 22, 2026
How to Migrate WordPress to a New Host with Zero Downtime
Achieving zero downtime during a WordPress migration requires a strategic cutover. If you…
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Jun 22, 2026
How to Fix the WordPress White Screen of Death (WSOD)
The WordPress White Screen of Death (WSOD) is typically caused by PHP memory limit exhaustion, a…
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May 5, 2026
Codeable Alternatives 2026 — Real Pricing, Real Hidden Costs
Honest comparison of Codeable alternatives in 2026 — pricing, vetting quality, hidden fees, retainers vs one-off jobs. Eight options reviewed.
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May 5, 2026
How to Compare WordPress Maintenance Providers — A 5-Minute Checklist (2026)
Decision framework for choosing a WordPress maintenance provider. 7 questions to ask before signing — hosting, plugin licenses, malware, scope, billing, ownership, exit clauses.
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May 5, 2026
WordPress Maintenance Cost: $59/mo vs $240/yr Real-World Breakdown (2026)
Honest breakdown of true WordPress maintenance costs in 2026 — sticker price vs hidden hosting, plugin license, malware cleanup. With a comparison table.
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Jun 23, 2026RU
Как исправить ошибку «Error establishing a database connection» в WordPress
Ошибка установления связи с базой данных в WordPress означает, что PHP-код…
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Security and recovery 7
Hacks, redirect malware, Google blacklisting, CVE response.
Jun 23, 2026
How to Remove Malware From a Hacked WordPress Site
Clean a hacked WordPress site the way incident responders do: contain, scan, replace core, clean the database, then close the entry point. Real steps…
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Jun 23, 2026
How to Remove a WordPress Redirect Hack
A WordPress redirect hack occurs when attackers exploit vulnerabilities (usually in outdated plugins, themes…
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Jun 22, 2026
WordPress Site Hacked: How to Clean Malware and Stop Reinfection
If your WordPress site has been compromised, acting quickly is critical to prevent…
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May 7, 2026
WordPress / WooCommerce Checkout Anti-Fraud — 9 Production-Tested Defenses (2026)
Real-world anti-fraud stack for indie WooCommerce stores. Turnstile vs reCAPTCHA, BIN matching, velocity rules, address validation, 14-day hold logic. Without enterprise budget.
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May 7, 2026
WordPress CVE Response Playbook 2026: First 24 Hours After a Critical Disclosure
What to do when a critical WordPress plugin or core CVE drops. Triage in 30 minutes, patch sequence, monitoring for active exploitation, communication template for clients.
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Jun 8, 2026RU
Сайт в чёрном списке Google? Как убрать предупреждение «Опасный сайт» и вернуть трафик
Chrome показывает «Опасный сайт» / «Deceptive site ahead» и трафик упал до нуля? Пошагово: подтвердить в Search Console, вычистить заражение, закрыть дыру и запросить пересмотр Google.
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Jun 7, 2026RU
Сайт на WordPress взломали? 3 шага вернуть контроль за час
Сайт взломали, редиректит на спам, Google пометил как опасный? Пошаговый план: как локализовать, вычистить malware и закрыть дыры — своими силами.
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SEO, analytics and speed 11
Core Web Vitals, TTFB, hreflang, GA4 and GTM — what actually shows up in reports.
Jun 23, 2026
How to Fix Duplicate Meta Descriptions Across WordPress Pages
Duplicate meta descriptions in WordPress typically stem from three main sources…
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Jun 23, 2026
How to Reduce WordPress TTFB on Shared Hosting
Reducing Time To First Byte (TTFB) on shared WordPress hosting requires optimizing server-side…
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Jun 23, 2026
How to Track Button Clicks in GA4 with Google Tag Manager
Tracking specific button interactions—such as 'Submit,' 'Download,' or 'Add to Cart'—allows…
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Jun 22, 2026
How to Fix Core Web Vitals on WordPress (LCP, CLS, INP)
Optimizing Core Web Vitals on WordPress requires addressing three distinct performance…
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Jun 22, 2026
GA4 Events Not Showing Data: How to Find and Fix It
When Google Analytics 4 (GA4) events do not appear in your reports, the cause is usually…
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Jun 22, 2026
How to Set Up Conversion Tracking with Google Tag Manager
Setting up conversion tracking via Google Tag Manager (GTM) requires three core elements…
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Jun 22, 2026
Hreflang Tags Not Working: Common Mistakes and Fixes
When hreflang tags are set up incorrectly, search engines ignore them, leading to incorrect…
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Jun 22, 2026
Technical SEO Audit Checklist for Small Sites (2026 Guide)
For a small website (under 500 pages), a technical SEO audit does not require…
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Jun 22, 2026
How to Fix a Slow WordPress Site for Core Web Vitals
To speed up a slow WordPress site and pass Google's Core Web Vitals, you must target the three…
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Jun 23, 2026RU
Как ускорить WooCommerce с большим количеством товаров
Масштабирование WooCommerce до 10 000+ товаров требует оптимизации базы данных, изменения…
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Jun 7, 2026RU
Почему ваш WordPress тормозит: 5 скрытых причин, которые не лечат плагины кэширования
Сайт на WordPress медленно грузится даже с плагином кэширования? 5 настоящих причин тормозов — хостинг/TTFB, раздутая БД, тяжёлые плагины, изображения, старый PHP — и что реально с…
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Trading and crypto 6
Backtests without look-ahead bias, the Binance API, order books, funding. The trading bot blog →
Jun 23, 2026
How to Read Crypto Order Book Depth
An order book is a real-time database of open buy and sell orders for a cryptocurrency. Reading order book 'depth'…
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Jun 23, 2026
Why Bitcoin Funding Rate Matters for Traders
The Bitcoin funding rate is a crucial mechanism in perpetual futures markets, designed to keep the price…
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Jun 22, 2026
Backtesting a Trading Strategy in Python Without Look-Ahead Bias
Look-ahead bias occurs when your backtest uses information that would not have been…
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Jun 22, 2026
Binance API Errors Fixed: 429, -1021 Timestamp, -2015 Key (Python)
Exact fixes for the three most common Binance API errors in Python bots: -1021 timestamp/recvWindow, 429/418 rate limits, and -2015 invalid key/IP/permissions. Code included.
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May 18, 2026
The "Money Button" Illusion: What Crypto Bots Are Actually For
A crypto bot is not magic, and it's not passive income. We debunk the myths — "set and forget", "no emotions", "ready-made settings" — and walk through real infrastructure (WebSockets…
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May 14, 2026RU
Архитектура торговых систем: уроки инженера-строителя
Принципы строительной инженерии — расчет нагрузок, несущие конструкции, дренаж — в архитектуре торговых систем. Инженерный взгляд на алготрейдинг.
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Monitoring and reliability 3
What to watch a site with, and what belongs in a post-mortem.
May 7, 2026
Black Thursday in algotrading: how we lost 40% of accumulated profit in a single day
An honest post-mortem of Phantom Paper and NEXUS Testnet for May 6, 2026. PnL chart, what technically happened, what we changed — and why this day was more useful than ten winning ones.
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May 5, 2026
Best Free Website Monitoring Tools (2026): No Credit Card, No Bullshit
Honest review of free uptime monitoring tools in 2026 — UptimeRobot, Better Stack free, Uptime Kuma, Statping-NG, Gatus, healthchecks.io. What free tier actually means for each.
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May 5, 2026
Self-Hosted vs SaaS Monitoring in 2026 — The Hidden Cost of Each
Honest analysis of self-hosted (Uptime Kuma, Gatus, Statping) vs SaaS (Better Stack, Pingdom, Datadog) monitoring. When self-hosting saves money and when it costs more.
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Notes and essays 2
No step-by-step here: experience, conclusions and our own mistakes.
May 14, 2026
I audited my own SaaS for AI agents. Half my content was invisible.
A solo founder's wake-up call: I ran an AI-Readiness audit on my own site and found 12 critical issues. Here's what every SMB SaaS is missing in 2026.
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May 7, 2026
"I'm tired and might mess up" — when an AI honestly told me to stop after 5 hours of coding
Context window saturation in LLMs — what technically happens when an AI starts to "get tired", and a simple workflow trick to reset context without losing progress.
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Also on the site
/guides/ RU
Courses: lessons in order, start to finish
Two courses, both in Russian — one on starting out as a freelancer, one on working with AI. Lessons run in order, with exercises and short quizzes.
Open the courses →
/trading/blog/
The trading bot blog
Five technical write-ups on trading bots: architecture, risk management, walk-forward optimisation, ATR stops and an honest Python backtest.
Read the blog →
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