Online Learning

Learn Chinese by seeing how characters work: 好 = 女 woman + 子 child = "good". Free forever, no account, works offline: - 840 characters decoded into components, with origin stories - Stroke-order animations - Tone coach scores your own voice on the pitch curve (mic never leaves your device) - Official HSK 1-3 vocabulary + real-life dialogues - Tang poems with pinyin & audio Pro: $29 one-time, no subscription — full HSK 1-6 vocab (5,000+ words), smart review, timed mock exams.

PrepScore helps students and professionals prepare for hard exams with realistic practice, full explanations for every answer, visual flashcards, mock exams, and weak-spot tracking.

Get certified in the EU AI Act (Regulation 2024/1689). Master Article 11 technical documentation, ISO 42001, and risk management for the 2025/2026 deadlines.

Practice system design interviews with an AI interviewer that listens to you explain, watches you draw on a whiteboard, and asks follow-up questions. Voice-first, real-time feedback for engineers preparing for FAANG interviews.