How to improve writting skills for some one speak English as second language.

This suggestion is the best one I have read so far.

 

There's a real nice book published by Readers Digest. It's titled, 'Write better, Speak Better"

 

If you want fast course use IRC or other chat IM system.. First you will learn fast typing, and second, English language and all slangs...

 

We're having the same problem, we're Czechs. What we've found very useful are these two books. They are with the keys so you can check your answers immediately.

English Grammar in Use
http://www.amazon.co.uk/English-Grammar-Use-Answers-ROM/dp/0521537622/

Advanced Grammar in Use
http://www.amazon.co.uk/Advanced-Grammar-Use-CD-ROM/dp/0521614031/

We have older editions but I think that the new ones will be as good as the older ones.

 

Do have a command over grammar. Its a must if wish to master writing.

Take one step at a time and read a lot. Don't restrict yourself to a given segment.
I read a lot of novels to improve my skills!
Correspond with people and surf the net. You will come across a lot of helpful material.