Hello,
Here are a few things to help you:
- When your character wants to cook, you will be displayed a menu showing what you can cook (so at first, you will only see the easiest thing to cook, what your char cannot manage will not be displayed until you gain a little skill).
- You can look up information in Illarion's wiki
[LINK] (or straight to the cooking section.
[LINK])
I hope that's sufficient help.