Free courses that cover what every backend job assumes: a server-side language, a database, version control, a terminal and containers. You write and run real code on every lesson, and each course ends with a free certificate.
Overview
Syllabus
- Learn Python — Variables, control flow, functions, data structures, files and errors, then classes and modules. The server-side language for this path; Go is the alternative if you prefer a compiled, typed one.
- Learn SQL — SELECT, WHERE, JOIN, GROUP BY, subqueries, indexes and schema design against live tables. The half of backend work that happens in the database.
- Learn Linux and the Command Line — Files, permissions, processes, pipes and bash basics. Backend code runs on Linux servers, and debugging it means being at home in a terminal.
- Learn Git & Version Control — Commits, branches, merging, conflicts, remotes and undoing mistakes. Every backend team ships through Git; every code review happens in it.
- Learn Docker & Containers — Images, Dockerfiles, volumes and networking. How a backend service is packaged so it runs the same on your laptop, in CI and in production.
Courses
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A free, interactive online Python course. You write code on every lesson, get AI hints when you're stuck, and earn a free certificate when you finish.
- Master Python syntax, variables, types, and control flow
- Write reusable functions and work confidently with lists, dicts, and sets
- Build object-oriented Python programs with classes, inheritance, and methods
- Read, manipulate, and structure real data the Pythonic way
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A free, interactive Linux course for beginners. You type real commands into a browser-based Linux terminal on every lesson - files, permissions, pipes, bash - with a free certificate when you finish.
- Navigate the filesystem and manage files from the shell
- Read, search, and transform text with grep, sed, and pipes
- Compose commands with redirection and pipelines
- Use environment variables, permissions, and processes confidently
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A free, interactive online SQL course. You run real SQL queries against live tables on every lesson, with AI hints when a query doesn't return what you expect, and a free certificate when you finish.
- Write SELECT, JOIN, and aggregate queries on real data
- Filter, group, and sort with WHERE, GROUP BY, and HAVING
- Compose subqueries and CTEs for complex questions
- Design simple relational schemas with the right keys and types
