[Uatu]

Ah - well, wizards (and sorcerers) are a bit iffy in that:

1. You need to find monsters with high enough INT (or CHA) to become wizards (or sorcerers) first.
2. There is a strange thing (bug?) concerning NPC wizards/sorcerers in that when gaining levels, they tend to choose one (or no) seemingly random (but not random) spell (like a 4th level spell for some reason when you cannot cast it yet). (Normally, PCs can choose 2 spells at each level gained.)

Also, I don't think I have seen any kobolds in that game...