Mobile Apps for w700i W700i, i.e. java based

I finally got my moblie today.it's a lovely piece of hardware,*img183.imageshack.us/img183/8758/wubzg9.gif called as W700i.

I am new to this smartphone business, so can people tell me how can I increase it's effectivenes?
u know, things like games, ringtones, and importanty, some necessary applications.


egarly waiting for advice