My grocery list for a given week usually looks like this:
Protein:
Frozen chicken boobs (if I've run out, if not, this isn't on there - a bag usually lasts me three or four weeks)
1 lb ground turkey (most useful meat in the world. Sub it in for ground beef in ANYTHING)
Canned beans to add to salads and meat dishes
Packaged sliced turkey breast for sandwiches/salads
Box of Boca Chik'n patties
Produce:
A few bags of whatever veggies are in season and look fresh
A few bags of frozen mixed veggies
Bananas or apples (whichever's cheaper)
Carbs:
Whole-wheat pitas or tortillas
Whole-wheat english muffins
Whole-wheat spaghetti (again, only if I've run out recently. A package lasts me two or three weeks)
Brown basmati rice
Other:
1/2 lb block of cheddar cheese (only if I've run out; these tend to last me two weeks or more)
Bottle of organic pasta sauce
3 small bars organic dark chocolate (at one or two squares per day, they last all week)
Bottle of organic salsa with garlic
Gallon of 1% milk
Butter (spreadable kine, only every few weeks)
Box of creamy corn and roasted red pepper soup (Trader Joe's brand)
My meals are generally pretty simple. Breakfast is an english muffin, toasted, with a bit of butter and some raspberry preserves. A glass of OJ or milk goes with. Lunches are one of three or four things: a bowl of the corn/pepper soup, with cheddar grated into it; a Chik'n patty on an english muffin with spinach leaves and marinara sauce; reheated turkey chili (homemade!) over brown rice; or a pita/tortilla with sliced turkey, cheddar, and any lettuce I have hanging around. Dinners follow a similarly predictable pattern: chicken stir-fried in shoyu (soy sauce) and garlic with perhaps a bit of fresh ginger grated in, with veggies done the same way, over brown rice or alone; whole-wheat pasta with the organic sauce and some steamed frozen veggies; turkey chili (I make a big batch and fridge the rest for lunches throughout the week) over rice; or any of the things from lunch, or...well, anything I can throw together out of what's on hand. I don't cook from recipes; I improvise.
My average calorie count, when I bother to add it into Fitday (about once or twice a week, max), is around 1300-1700, depending on the day. I usually let myself have a square or two of the dark chocolate after dinner and sometimes after lunch as well. I try to keep almonds around the house for snacking on.
The most important thing, food-wise, is to eat as much NATURAL food as possible. Whole foods. Unprocessed, or as minimally processed as possible. I'm lucky in this; I live in Santa Cruz, California, where the natural/organic/health food stores are positively THICK on the ground. But I imagine you could do most of this anywhere, really.
The biggest concept you have to wrap your head around, though, if you want sustainable weight-loss, is that THIS IS FOR LIFE. This is not "I'm not going to eat my favorite high-fat high-sugar super-processed foods for a few weeks, or months, and then I'll be able to have them again to celebrate losing all this weight!" This is "I'm going to shift the entire way I live my life, so that I can live healthily. With this will come the weight loss. I'm not depriving myself of treats, but I will remember to only have them in moderation." If you can't make this kind of shift, it's likely that you'll either A: not lose the weight, or B: lose it, then gain it all back (plus some probably).
Good luck! You've come to a good place to get support!