Just Starting Out QuestionsFollow

I have downloaded the SWG 14 day trial to try out the game. I have played MMO games before and like them and I have played almost every Star Wars game out there so i thought this would be a good match.
I am a bit confused by the overwhelming number of options available to start out. Specifically choosing active servers and not being able to transfer (without paying out cash)makes it important to understand what type of character i will be. Ideally i would like to be a Jedi (as I am sure do almost all players) but I understand you cannot start as one.
Is there a good guide to get a better understanding of how the game is played or is it just better to dive in and scrap the free account if I mess up?

Thanks,
I'll try there and read a bit first.