A quick over view. It has a section on spells, how they work with some rules in it. Then 200 spells taken from OGL 3.5 products from a wide source. Some from there own Arcane series but also from other companies. It finishes with a few monster stat blocks a feat or two etc. Just to give you a idea where all they collected the spells from, there is like 3 pages of OGL listing what books was used. Anyways from their own stuff, to Green Ronin, to WotC, etc.
For the most part they look pretty good the spells they picked, but understand I have only skimmed the book so far.