The guide is 133 pages in pdf format. Here's what you'll find inside:
- A basic guide to the game
A complete walkthrough from the first room to the last boss battle
Guides for every side quest
Solutions for every puzzle with images and written instructions
Photo and Dragon Egg locations
Tables for Weapons, Runes, Trinkets, Skills and Pets
Boss strategies plus hard mode tips for every boss
Labeled maps of the main areas
The guide is included with the version on johnwizard.com, but it is also availabe separately for $4.95.
There's a sample available at http://cdn.johnwizard.com/COTI-Guide-Sample.pdf and if you would like to purchase the complete guide you can do that here.