Hi im a new htc desire owner and this is my first android phone. Everything's going good so far, managed to get my gmail up but for some reason it wont let me sign into face book. Is there any vital information u think i should know as well as any must have apps i should download? also is there any way to see my 3g usage easily? i cant seem to find it lol. thanks in advance and please leave any advice u might have for me thanks.