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Learning

Courses

Step-by-step tracks over the roadmap topics: theory, quizzes, and runnable code in one sequence. Free courses are open to everyone; paid ones come with the subscription.

C++Basic

Modern C++ — quick intro

This short course gives you a hands-on tour of the modern-C++ idioms we rely on throughout the rest of the platform.

cpp3 themes · 15 lessons
2 free lessons
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goFree

Go slices in practice

A short free track — slice internals, a quick check, and a runnable exercise compiled on our sandbox.

go1 themes · 3 lessons
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QuestionsChoose a stack
C++GoPythonC#JavaJavaScriptTypeScriptQA / TestingPHPKotlin / AndroidSwift / iOSData AnalyticsMachine LearningSecurityDevOps / SRESystem AnalysisUnreal Engine
Menu · sectionInterviews
Start an interviewTests and AI interviews for your stackProgressWhat you know and what is left
Tools
ATS resume checkerWhat blocks the screening — and how to rewrite itSkills for your LLM agentReady-made instructions for Claude Code and Codex
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