The topical overviews are gold. Every chapter cuts right to the chase - lays out core concepts, highlights common question types, & offers checklists for how to attack them.
The real exam questions & detailed answer explanations are also gold. This book doesn't just explain why the right answer is right; it explains exactly why & how each wrong answer is wrong. I find myself updating my own outlines as I work through practice questions, b/c the explanations contain such clear & pithy rule statements.
Only two complaints: (1) They need to add Civ Pro. (2) The outline formatting in the topical overviews is confusing; it's hard to tell what's a subheading, what's a sub-sub-heading, etc. Fix these 2 issues, & I'll add a 5th star.