Carrie's link just has the story pdf, so...
If you figured out how to trade, assign stat/skill points etc. there is not a great deal more in the manual. There is a description of the special move and all the skills (though no specifics).

The Locus Inn - Skill System (individual paths, and a skill table for each class)

RPG Vault - Divine Divinity Skills XI (links to other skill sets at bottom of page)


You may also want to check out

Early Starting Tips and differences between classes (minor spoilers)

or Early Starter Tips (NON-Spoiler Version) (contains much of the information in the above two topics.


If that is not enough, check out the sticky topics in the Help/Tips/Tricks forum.


From the manual;

Keyboard Shortcuts
SPACEPause/Unpause the game
CTRLTarget closest enemy to mouse cursor.
CTRLWhen dragging multiple objects from your inventory in the world and releasing the mouse cursor while holding CTRL pressed, split up the objects.
SHIFTWhen holding shift and moving the mouse cursor to the side of the screen, you can scroll away from your player character. Release shift to jump back to your player character.
ALTShow object boxes describing interesting objects in the environment
RToggles auto-run mode on/off. When toggled on, a left mouse click causes your character to run towards the designated point instead of walking to it.
CToggles combat mode on/off. draw your weapon (if you have none, show your fists) or put down your weapons
MToggle mini map Open the inventory (back pack)
EOpen the equipment plate
TOpen the player statistics plate
CTRL+LQuick load
CTRL+SQuick save
LOpen the "Load Game" screen
SOpen the "Save Game" screen
ESCBack to main menu
QOpen the quest log (diary)
AOpen the auto map (diary)
CTRL+F12 Assign hotkeys (F1-F12)
CTRL+F11Create a screenshot in the "Captures" sub directory