IT Skills
Step-by-step explanations. Hands-on articles you can learn from while you code.
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.
JavaScript Course
Learn JavaScript in the browser with this free course. Covers let and const, strings, arrays and objects; if / for, functions, map / filter / reduce, error handling and async; classes and inheritance; and browser APIs from DOM and events to fetch. 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 Linux by running real commands in a browser terminal: navigation, file operations, permissions and pipes, then grep / sed / awk and shell scripting — 38 articles and 130 exercises, no setup.
IT Foundations
A free course for anyone who has started building programs and apps and gets stuck on terms like server, API, deployment, and environment variable. Instead of writing code, you check what each piece does and how it works through diagrams, so that you can put the steps and explanations in books and courses into your own words. No runtime environment is used.