I hate my mathematics book... It is written by a guy that's been doing math for years upon years, and he happens to be my teacher... The only problem with the book is that if you're NOT a super duper mathlete that know all the different ways of writing math, (He switches between things like crazy.) and know all the terms then you're off to a bad start. Add in the fact that the book skips and hops all over the flipping place, and yeah...
I have no doubt that it's probably a really good book for people that are already really good at math. But if you're not... Well, you're fucked, because the book doesn't explain pretty much anything in any detail, nor does it show a lot of examples. All in all, each chapter has a brief well written summary of what you'll be learning, then the next page gives you a formula with barely any explanation as to what is what and then rushes forwards to the writers favorite thing, which is proofs.
And the midterm exams he sets up based on the book... Well... Let's just say that the people in my class who spend an average of 8 hours EVERY. SINGLE. DAY. studying (Including weekends.) On top of lectures are going: WTF IS THIS SHIT!