Business Chinese 101 - fun & practical

I would like to start with three level Business Chinese 101 here.
(Beginner-Intermediate-Advanced)

April 5th, 2009

Beginner:
Chinese language intro => http://en.wikipedia.org/wiki/Chinese_language
你好 [how are you] - [pron: nee hao]
一,二,三 [1, 2, 3 ] - [pron: yi, er, san]
说中文 [speaking Chinese language] - [pron: shuo zhong wen]
难 [difficult] - [pron: nan]

Intermediate:
Please share your learning experience and resources with all. Thank you.

Websites:
Convert Chinese Characters to Pinyin: http://www.chinesetopinyin.com/ [very simple]
Zhongwen: http://www.zhongwen.com/
Claimed a free online: http://www.chineselearner.com/

Can someone help find a free website to listen Chinese words & sentences ? Thank you.


Advanced:
Please share your learning experience and resources with all. Thank you.

Testing water - 摸个底

An interesting article "如螃蟹般一红就死　内地富豪形象集体崩溃"
http://bbs.tiexue.net/post_3468970_1.html#

Enjoy learning...

Are there good websites for children to learn Chinese ?

Many thanks !