Pritikin Recipes

I’m thirteen and have been a vegitarian for about a year. I want to become a vegan, but my diet lately has been going down hill. I’ve been eating mc.donalds for breakfast bread and a cookie for lunch and taco-bell for dinner. My mom does not cook, so I need things that are pre-packed or easy to pepare, or even fresh.I’m not picky.What shall I buy and do you have any diet tips? Also what are some ingredients that are animal derived?

My question again was about diet cooking tips and there have been some great answers