hey i'm back for ur answer~ yep, actually, there are 5 different tones for one syllable/(PinYin), but one of they 5 sounds is really special. the special ones are only used at the end of sentence or phrase(usually a sentence~),they r called 轻声(qīng shēng,may be translate as slight-sound). many characters that slight-sounded have no meaning(for ep. 的 吧 呢...),but they do different grammatical functions. the other 4 are usually called 一声,二声,三声,四声,(sound1,sound2,sound3 and sound4). most times the teacher says 4 kinds of PinYin, they are meaning those 4 tones. PinYin is the tool to help pronounce, important to the self-learners~ hope my answer helps :D ~

em...do you mean PinYin or just 4 different tones of PinYin。。。？

InternationalChinese.blog.com, this is my blog，there are some tones exercises there with the record，but my blog is just open，so im adding more more things there，hope that will help you，and welcome send me your question about learning Chinese，Im glad to help you, because I have much experience on teaching mandrain tones.

i can teach you via phone..

i think it is better to make a chinese friend ,because it is hard to learn the chinese tones by yourself