This is a descent system to help test the waters and see if your a fan of this RPG and more importantly... if you and your group can manage a sandbox RPG. There is enough meat on this package to run a couple of sessions and the full version will certianly help... but I'll just warn some people that this system is different.
You are powerful and there is more focus on the world than the combat. The Book is more of a guide than a manual. I would recemind it to others, but I would tell them that a couple of things are abstract because that's how they are soppused to be. If your a fan of wide brush strokes and building your own legacy, nation, or army then you'll have fun. If you prefer clear cut lines, and clearly defined rules then... maybe the main book might help, but I honestly don't know.
Still it's a descent system and you might enjoy it enough to buy the main book. If not... well it might give you an idea or two.
[4 of 5 Stars!]