Ebook: A Transition to Advanced Mathematics

I would give this book negative stars if I could.
My first complaint that it is an insanely expensive book for the lack of material.
My second complaint is the lack of material. This book is horrible as far as explaining what needs to be done and how to effectively write proofs. I am really struggling with how this book operates and I have a horrible professor that is just as vague as the book itself.
I would suggest to students that have a proofs class with this book that they should get a supplement book like 'How to read and do proofs'. This will make your proofs experience a little better.