The first 5 lessons are free. Course lessons no longer include direct links to official documentation.

Redesigned every lesson as a modern interactive slide deck. Content, worked examples, copyable prompts, exercises, checks, questions, and answers are now split into focused slides with forward and back navigation for clearer study in all 6 languages.

Renamed the app to Learn Claude 90 Days Course. Improved the multilingual home and lesson screens, clarified that the first 10 lessons are free, removed repeated explanatory text, and refined the 90 distinct lessons with syntax and structure, worked examples, copyable test prompts, practice tasks, success criteria, and retryable quizzes.

A completely rebuilt 90-day interactive course. Every day now has a distinct lesson with clear explanations, feature and syntax guidance, worked examples, copyable test prompts, practical tasks, checklists and retryable quizzes in 6 languages. Progress, notes and bookmarks remain on your device.

A completely rebuilt interactive 90-day course: every day now has a distinct topic, clear explanations, feature and syntax guidance, worked examples, copyable test prompts, hands-on practice tasks, checklists, and retryable quizzes. Expanded and verified in all six supported languages.