Salem

Can anyone help me and tell me all the skills you can Learn for food

The wiki is going to be your friend here, check out these pages:

http://www.salem-wiki.com/mediawiki/index.php?title=Gluttony

http://www.salem-wiki.com/mediawiki/index.php?title=Food

Some of the beginning to mid-level Skills are:

Simple Cooking
Intermediate Cooking
Fried Foods
Seafood Chef

Edit: PS Buy a high purity knife.

I've have tried to make since of that on wiki before but confuses me