Recommended and introduced by Trevor [here](http://www.hackingchinese.com/extensive-listening-challenge-october-2014-wrapping-up/#comment-646686). Each book (one for each level of the new HSK ex... Read more.

amazon.com

This is probably one of the best resources for upper-intermediate or advanced learners of Chinese who want to learn something using their Chinese. Khan Academy has hundreds of videos about differen... Read more.

youtube.com

This website offers a large number of previous HSK and YCT Chinese proficiency tests, sorted by year and level. This is excellent for test preparation and/or benchmarking. Read more.

chinesetest.cn

Foreigncy provides daily digital flashcards, with audio, that prepare a user to read a foreign policy or economics from a regional source. The site also provide users with an English language summa... Read more.

foreigncy.org

This blog post contains both a list of most of the elements in the periodic table in both Chinese and English, but more importantly, it contains a discussion about the characters used to represent ... Read more.

languagelog.ldc.upenn.edu

Online Chinese flashcards that adapt to your learning, Chinese speaking practice using voice recognition, and a simple, fast Chinese-English dictionary. Read more.

fastchinese.org

Select and Speak uses iSpeech's human sounding text to speech (TTS) to let you select text from almost any website and make it talk. This is excellent both for productivity and for added listening ... Read more.

chrome.google.com