don't worry!! You just see more and more reading of Chinese audio and video files, if you can not find, I can give you ， my MSN [email protected]

If you want to learn it,I can teach you.my MSN id is [email protected] add me

In my book ,the best way is to communicate with Chinese as much as possible

In my opinion ,the best way to distinguish them is to feel the four different tones and to communicate with Chinese.

hey i have two websites which are very good for foreigners to learn the tone http://www.shuifeng.net/Pinyin.asp this one is more about some basic characters' pronounciation. http://www.shuifeng.net/Pinyin.asp this one, you need to sign up, but it helps you the tone in soem particularly situations. this can be very helpful if you communicate with some Chinese people. go for it :) best wish for your way to learn Chinese :P