Need your Help... Pls pls pls

Dear everybody:

I have a very sticky rpoblem and I need your help.
I am a student in the department of English Literature. My native tongue has always been Arabic. I, everyday in the college, learn new words and vocabs. The problem is, I CANNOT REMEMBER ALL OF THEM. I mean, after I learnt them all by heart. When it comes to either speaking or writing, and I want to recall a spicific word, it just doesn't come across my head. Other times, I get stuck when i want to know the English word for a word in Arabic.
Putting all of these aside, my pronunciation is a huge thing I have to deal with. I can speak American and British accent, but which is which, I cannot serttle on any of them.
Lol, It's too long sorry

Thanks a lot