Study Articles

Python Course

Learn Python step by step in your browser — a free online course with 68 articles and 250 hands-on exercises. Covers print, variables, data types, if / for / functions / exception handling, classes and inheritance, special methods and OOP, organizing multiple files with modules and packages, and the standard library (datetime / os / re / json / asyncio). Build production-ready Python skills as fast as possible — even as a beginner. No setup required.

SQL Course

A free course where you learn SQL hands-on by running queries in your browser. From the SELECT / WHERE / function basics, through analytical queries with JOINs, subqueries, and window functions, to index design, execution plans, and tuning — 53 articles and 234 exercises take you from beginner to a practical, job-ready level. No setup required.

Linux Course

Learn the basics of the Linux command line hands-on in a browser terminal.