If you seriously want to improve and learn writing, then I'd suggest the "Fan Fiction Writer's Resource" at boards.theforce.net , to be exact here :
http://boards.theforce.net/Fan_Fiction_Writers_Resource/b10304

It is Star Wars - Related, so please don't rather post anything non-starwars there, but apart from that it's a great resource ! I've learned quite a lot there !

Also, it is very friendly there. If you decide to post there please try to be reasonably.

The people there are friendly, but also serious in the way that Writing is their main hobby. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />

If you don't understand certain terms you can ask me, or one of the mods there. Also, there is a kind of "dictionary" ahead (currently being planned as part of a greater discussion about the furure of that board over there).

Alrik.

When you find a big kettle of crazy, it's best not to stir it.
--Dilbert cartoon

"Interplay.some zombiefied unlife thing going on there" - skavenhorde at RPGWatch