SkillBrain is a learning platform for practical study of Linux, Python, Docker, and DevOps tools. Instead of video lectures, users work in a live environment: executing commands in a real Linux terminal, writing and running Python code, and exploring containers and CI/CD fundamentals.    Courses are organized into structured tracks and modules — from basic concepts to advanced scenarios. A built-in AI mentor helps troubleshoot errors, explains commands, and suggests solutions directly during the learning process. Gamification elements such as experience points, levels, leaderboards, and learning streaks support consistent practice and steady progress.    The platform is suitable for beginners as well as for those who want to systematically improve their skills.