Hey guys I just discovered forgeworld stuff. Im new to table top gaming and only bought my first warhammer 40k thing in October before that I'd never heard of anything to do with the background or build up to 7th ed.

So I got a multimelta arm for my dreadnought in the mail today and I found a fw catalog in the box. Im half way through it and I just think I might need to find out more about these new land raiders and other things. Could someone tell me which book contains the 7th ed rules for the 40k stuff?