40 online elementary language lessons in pinyin and simplified characters; dialogues, vocabulary, grammer, exercises, audio, dictionary, and phrase book.
Centre for Teaching Chinese as a Foreign Language - University of Oxford
Click "Learning Elementary Chinese" for links to vocabulary, grammar, characters, pinyin, audio, glossary, and dictionary.
Annotated links to over 600 China and Chinese language related websites; click "Chinese Language Teaching and Learning Resources."
Practical Chinese Reader: Learning Aids Online
Links to online learning aids for Practical Chinese Reader, including audio and video clips, vocabulary, characters, grammar, exercises, homework, self-tests, and games.
MDBG Online Chinese-English Dictionary
Excellent online Chinese-English, English-Chinese dictionary for words, phrases, and sentences.
The Chinese Outpost
Comprehensive intro to writing, pronunciation, and grammar; dictionary.