ChinesePod is one of the most comprehensive resources out there when it comes to listening. I started out with ChinesePod a long time ago and found it quite useful, especially from upper-intermedia... Read more.

chinesepod.com

This site is best described as a Chinese version of Quora, so in other words a site where people ask and answer questions (and discuss other people's questions and answers). Read more.

zhihu.com

This website and podcast offer theme-based, progressive online audio lessons. There are transcripts, worksheets, mobile apps, videos and more. Not all of this content is free, but the beginning of ... Read more.

melnyks.com

Tianya Club is a very popular online Chinese forum (according to Wikipedia, it's the twelfth most visited website in China). The site is massive, including not only a forum, but also blogs, photo s... Read more.

bbs.tianya.cn

Basic HSK grammar from beginner to advanced level. The best part is that in each lesson end, there is a quiz to test if you have really mastered the grammar. Read more.

hskcourse.com

The Chinese Language Institute (CLI) offers free Mandarin learning resources in the form of articles on a variety of topics including Chinese characters, Chinese grammar and chengyu. They also offe... Read more.

studycli.org