Well, depends on what you need to know. I have played two games with the 3rd edition, so I'm hardly an expert.
It was fun. It is still Warhammer. It is still a Roleplaying Game. It has a large focus on tactical combat.
It does include a lot of stuff. There are tons of cards and markers you use for everything. The actual character sheets only have minimal information on them, most is in a pile of cards that you also have, which details the actions you can take in combat, talents you have, and so on.
Bye
Thanee