Amazon has the official Forza Game Guide on discount at $13.59 (32% off).  Get a leg up on the competition!

Check it out:  Amazon - Forza 2 Game Guide 

Also, Forza 2 is available for $54.82:  Amazon - Forza 2 Game

[Thanks euroclip]

Book Description
*Maps for every track - Each track is broken down with turns detailed to give players the best racing line and an edge over the competition
* Tuning how to - The guide will include a comprehensive tuning guide so players will be able to tweak their cars to suit their driving style. Tuning plays a vital part in being able to compete at the highest levels.
*Unlock info - There are over 300 cars in the game and Prima tells how to collect them all.