lupus said:
Okay i role play a lot..If i'm going to start up what do i need apart from the main Rule book to get going...
Running or Playing it?
Either way some fundamentals to have on hand dice, pencils, paper, graph paper and a bunch of character sheets.
Source material wise.. unless you plan to start your game during the second, thrid, fourth or fifth season then the main rulebook has everything you need to start playing straight away. It contains enough material on the main races and universe to quite ably produce and run adventures.
If however you are running a game where the players are mostly all of a single species then i'd suggest getting the appropriate race book.
Rangers book is good if your group are wanting to play as Anlashok, and likewise if anyone wants to play a Psi Corp or Technomage character then those books are helpful (though you can quite ably play a psi corp character with just the main rulebook, the sourcebook just gives lots of source and additional options).
If you have no adventure planned I'd recommend the first part of the Babylon 5 story arc called "Fiery Trial" as it is a great place to start.