Mechanics of Flight by Kermode (which was revised by Barnard and Philpott) is excellent.
As is Handling the Bigs jets.
I bought Aerodynamics for Naval Aviators and didn't actually use it much, I also have the Anderson book from Uni and again that wasn't much use for the ATPL exams. Anderson's book is however fantastic for other lives and the naval book is OK too.
All you NEED for the ATPL is Mechanics of Flight and perhaps Handling the Big Jets with a tiny bit of supplemental stuff from the notes you have (even if they are terrible). Was helping someone with their Principles of Flight today and its not Anderson or Naval territory! I totally agree with question practice, its the best way to pass the exams, but not the best way to learn.