Does anyone know if there is a full detailed track and car list with maps and diagrams in the Apex book or should I also get the Prima Book to go along with it for that stuff. If possible pictures would be nice! Thanks in advance!
As Lasdul says, the Apex book isn't specific to the game but more a guide to driving technique and tuning advice. It's actually very good (I've flicked through) and gives good advice on tuning out understeer and so on.
There's also a short guide to photography at the back which you may also like.