Clinical Handbook of Psychological Disorders: A step by step treatment manual, edited by Barlow. Up to date epidemiological info, background, also details treatment data and usually goes through a treatment sample case. Or at least the older versions did this, the 6th Edition is coming out soon.
Treatments that Work are good guidelines, though they assume you have a good basis in the general modality. I have the PE stuff for the patient workbooks, I was also trained by Foa's people in PE, and if you haven't had formal training/supervision in it, there's a lot that you miss if you only have the manual to go on.