I'm going to do this book a SERIOUS injustice with a relatively short review. Considering the price tag of $15 (at least when this was written), it's a steal. The book is huge. It's detailed. It's well written.
The basis of the game is that people are basically just minds now or souls or whatever you want to think of them as. They are called Egos in the game. You can then inhabit Morphs that are bodies made in a tremendous number of shapes, sizes, and capabilities. So the game obviously deals with some very dense subject matter and has an encyclopedic overview of the terms, what the world is like, and how people get along in the universe. Most of the game centers around political conspiracies, horror elements, and investigation and exploration.
In one game, you may inhabit a sexy assassin body and the next a non-humanoid mech. You can be a space fighter if you want. To some degree then, character creation is what your mental capabilities amount to. Things like strength are determined more by what Morph you are in. That is cool because you can just switch out (if you have the cash) to whatever you need to get your job done.
There are a lot of mechanics, so I would recommend just taking it slow and trying to use the base rules to teach yourself and your group the game. The PDF is judiciously bookmarked with hotlinks embedded in the text that will take you to references directly. That is a HUGE help when navigating the book. No "check pg. 209" to slow you down there.
The game and game world are complex, so be ready to read through a couple of times. The production value is amazing though, so it's fun to work through. But be warned, this is about a rules heavy as you can get without it being a joke. It's not a bad thing, it's just not for everyone.
[4 of 5 Stars!]