There are a lot of things the manual does not have. It does not give a detailed list of military units by nation. It doesn't have an index for the spells, so you can't decide, for instance, "I'd like to look up blade wind" without knowing what school it's in. For blade wind, the school is obvious, but for some spells the school is far less intuitive.
The magic items are listed by the power of the item, not by name or what magic picks you need to make the item.
If you played the demo, you probably figured out how important the magic sites you find are to the game. These are not listed by their difficulty of location anywhere in the manual.
The information in the manual, except for the first 20 or so pages, is for the most part duplicated from the in-game help you get playing the demo.
If you are like me, you will find yourself using this site and sites like Sunraybe's a lot more often than you use the manual. Just remember that it is where your CD key is.
