We did some research on the web and summary as the following to help those who are interested in learning Chinese free.
Some Free Podcasts
Using Podcast to learn Chinese is very convenient, because you can take the podcasts with you anywhere you go.
Online Free Resources
This website has 40 online lessons with audio, including reading, speaking, writing, modern vocabulary, grammar, calligraphy, examples and exercises. All texts and dialogs in mp3 format for download.
This website has the dictionary and readings.
This website provides learning Chinese Characters with Video, and learning Chinese Vocabulary and Phrases with Audio.
By this website you can learn how to read, write and speak Chinese. It has free online lessons.
You can learn to speak Mandarin Chinese online by using this website’s free Mandarin Language Lessons.
This website provides tools to assist you in learning and using Chinese language. Rather than being a Chinese language course, it provides tools to those who are already studying and using Chinese.
It is a good reference for Chinese learners.
This website has essential course including basic Chinese expressions, Greeting, Saying Goodbye, Thanks, Apologies, Compliments, Approval, Shopping, Eating Out, Parties.
Help Kids to Learn Chinese
This website is for kids who are 3 to 12 year old living outside China to learn Chinese. Chinese is taught through Chinese children’s songs, rhymes, games and activities. The site contains the lessons together with relevant worksheets, activities and sound files. All the materials are downloadable.
This website has Games and Stories for kids to learn Chinese.
Learn Chinese online with games, activities and songs.
Free online Chinese-English Dictionary
MDBG Free online Chinese-English Dictionary
Audio Chinese dictionary searchable in Chinese (simplified or traditional), pronunciation (Pinyin) or English. Chengyu, proper names, examples, synonyms and calligraphy.