Cooking is often overlooked as a profession. As mentioned, you can get nice buffs from cooking certain foods. You'll also want to level fishing which is quite painstaking to do in one go, but you can create food that gives you health/mana regen, +strength, +agility... it also saves you having to buy food.
You can even sell some of it, such as savoury deviate delights and dragon breath chilli.
It's not hard to level, but having to kill boars over and over again to get enough meat is tiresome at higher levels, so I'd recommend starting as soon as you can