I was a newbie at the start of 2011, and my first 2wd was a B4 - it's a good car don't get me wrong but as a newbie the main thing you will be doing is breaking it! Trust me I know.
Getting spares for the B4 was ok, but alot of the time things were always out of stock

in my opinion either go for a Losi 22, or an Ansmann mad monkey (x2c if you can afford it). Both are mid motor and I can only comment on the Ansmann which is easy to handle, cheap spares and lots of availability - plus it transformed my club racing