digchinese.com
Reading
Speaking of Chinese
This site focuses on resources for people who are studying or wish to study Chinese. It is especially useful for those engaged in self study.
Livemocha
Vocabulary and phrase lists organized into lessons. Chinese lessons contain audio clips with the pronunciation of each vocabulary item. Social network features and userplane chat client let you find language exchange partners.
The Universal Digital Library
Carnegie Mellon University book digitizing project which has scanned books available for download in electronic format, including a lot of Chinese language books
Chinese sex words, obscene language, curses and slang
Description from the site:
a number of useful words and cool expressions in the Chinese language (mainly Mandarin, plus some Cantonese specialties), some of which are rarely included in politically correct study books or censored student dictionaries. The reader is supposed to have a basic understanding of Mandarin and certain knowledge of the Chinese culture. Some of these words and expressions should be used with the greatest care, and people who do not know any Chinese at all should not use them unarmed.
Rutgers Multimedia Chinese Teaching System
Laid out like a Chinese text book with example dialogues, vocabulary lists, explanations of grammar.
