Yep maybe I just start a general course for FCE.
I think this is the best choice... I remember that my FCE course helped me a lot.
As for vocabulary and listening skills - watch films and TV series. Your ear will get accustomed with time.
Reading books can be useful too :)
My younger brother also read a lot of comic books. His vocabulary is really rich :)
this shows something important. if one is interested in the show and willing to follow the story then learning will be easier.
I think watching TV series is a good way to learn. But you have to choose "easy" ones at first.
For example, I've watched all seasons of "Lost" - there wasn't that much talking there, but a lot of action and dialogs were simple. But I don't know if even today I'm able to understand everything what Lorelai and Rory say in one of their "AK-47-style" conversations in "Gilmore Girls" ;)
I'd have problems with British stuff too, I guess, as I watch mostly American films and TV series.