Follow along with our step-by-step development, AI, and sysadmin tutorials.
Python
Learn how to batch convert JPG, PNG, and other image formats to WebP using Python and the Pillow library. Includes compression settings, transparency handling, and automation scripts.
JavaScript
Master the Fetch API — from basic GET/POST requests to error handling, file uploads, streaming, AbortController, and real-world patterns used in production.
JavaScript
Build a command-line file conversion tool using Node.js. Learn to handle file I/O, parse arguments, convert between formats like CSV to JSON, and publish your tool to npm.
Python
A practical guide to extracting text from images and scanned PDF documents using Python, Tesseract OCR, and modern AI-based alternatives.
JavaScript
A practical guide to modern JavaScript array methods — from everyday basics like map and filter to newer additions like groupBy, toSorted, and findLast.
Ubuntu
Learn how to create systemd service files to run Node.js, Python, Go, or any application as a background service that starts on boot and auto-restarts on crash.
Ubuntu
Step-by-step guide to creating automated, incremental backups on Ubuntu using rsync and cron. Covers local backups, remote server backups, rotation policies, and email notifications.
JavaScript
Build a production-ready REST API with Node.js, Express, and modern best practices — including validation, error handling, authentication, and deployment.
Ubuntu
Set up Nginx as a reverse proxy with free Let's Encrypt SSL certificates for any web application — Node.js, Python, Go, or Docker containers.
AI/ML
Step-by-step guide to fine-tuning OpenAI's GPT-4o-mini model on your custom dataset for better domain-specific performance at lower cost.
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