What should I get on my grocery list for healthier eating to lose weight?

Hi, my names Michaela, I'm 16... And I'm looking to lose a bit of weight. What should I get for a week's supply of food? I don't eat red meat. Could you give me a list... Snacks and everything. Price isn't a big issue, just not caviar on... Crisp 100 dollar bills. (: Thank-you!