Have to disagree with you on that one, Twin.
Bristow's book asks a lot of good questions, but many of his answers are incomplete, inaccurate, poorly explained, and a couple are just plain wrong.
A good effort if it was promoted for what it is -- one bloke's groundschool notes, and a good set of questions to get your head back in the books. But an aviation text it is not. Use it in conjunction with HTBJ (Davies) etc.