Is there any free web site, which fully guide me to make my english speaking well? And also give me best "TIPS"?

Well I no this isn't what you want but this may be a useful tip.

Dictionary.com, look up a word, and it will tell you what it means. You can even have it say the word, which then you can repeat. It even has if it is a noun, verb, etc...

Also babel fish translator (Free) is good if you want to translate something in your language too english to see how it comes out. Its what I use to do my spanish homework... ;O

Babelfish actually isn't very good and requires you to catch the (plentiful) errors yourself.

It's the only one I know of, hmmm, there is wordreference.com and they have forums for you to ask people questions too.