He goes over CPL theory, then PPL theory, then BAK theory (Yes, reverse it seems) and spends most of the time going through questions in his book. Best thing to do is challenge yourself and not look at the references above the questions, and search yourself.
After all, the exam is a test of how you can look up things and understand the legal-mumbo-jumbo associated with such.
Read through CAO 48 at least once, flight and duty times is a little hard to get your head around but if you have a vague idea you can nail most simple questions on it without looking.
Learn the CAO/CARs really well as they have useless/none Tables of Contents and Indexes. AIP has a handy index, I was advised to put the index to the front of my AIP, Also, the table of contents associated too was useful.
ERSA EMERG section is handy to look at as well.
I had a question on xponder codes which wasn't covered by Bob to my knowledge, it was answered by the AIP. The question was about during coastal serveillence OCTA, what would the transponder code be?
AIP says "Transponder code for 'littoral' surveillence is 7615 (from memory)"
I had never come across the word "littoral" - Just means on the shore of a sea/lake/ocean. There was another transponder question about being a certain distance off shore, don't get them confused.
Any questions, feel free to PM
Best of luck
Pyro