This site contains a huge number of lessons, complete with texts, vocabulary, audio, exercises and much more. And it's all free. Note that if you want to get the intermediate and advanced material,... Read more.

collections.uiowa.edu

I first used this dictionary during my first semester of Chinese and I have kept using it ever since. It has pretty good information about character etymology and provides more accurate information... Read more.

zhongwen.com

Finally, Duolingo added a En->ZH course. As Duolingo is the most popular gamification learning app, the learning experience is relatively streamlined and tested. The monetarization aspect leads to ... Read more.

en.duolingo.com

Douban is one of the most popular online Chinese communities and forums. You can read a wide variety of material - on almost any topic imaginable - from native speakers. It's a wonderful source... Read more.

douban.com

TutorMandarin is an online Chinese tutoring software and service. Students take 1-on-1 classes with professional Mandarin tutors on PC, Android, or iOS. Full courses from Beginner to Advanced, Spok... Read more.

tutormandarin.net

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 is a newsletter for advanced students run by Andrew Methven. The free version includes a weekly newsletter with highlighted readings and some interesting vocabulary highlighted and discussed. ... Read more.

newsletter.slowchinese.net