Yoyo Chinese is probably the most established and popular website for finding online Chinese courses. This website offers video-based lessons with interactive quizzes, audio review, pronunciation practice, flashcards, and more. There are a few different courses for sale – Beginner Conversational, Intermediate Conversational, Upper Intermediate Conversational, and Chinese Characters Course. The host has a knack for explaining things in an easy to understand way. Read the full review.