I don't know what kind of budget you are dealing with.
start with the basics - 3 BIG meals of things you love to eat.
It's a lot easier to eat big when it is some of your favorite food, well prepared, and it's something that makes you HUNGRY for just thinking about it.
Additions - in addition to supplying yourself with a buffet of your favorite dishes, Get a big pot(a "large stockpot")(note-must fit in refrigerator) that you can cook up a big supply of a "support food" for your meals. Support food is cheap to prepare, and it's just a microwave or whatever away from being heated.
= an example would be chicken and rice soup w/ vegetables = get your chicken breasts or even a whole chicken , chop up your onions , celery, carrots, etc... maybe even make a roux(flour added) and go to town with a giant pot of chicken rice soup = here is a recipe
http://thepioneerwoman.com/cooking/2008/04/simple-hearty-chicken-rice-soup-itll-keep-ya-honest/ --- Make sure you multiply the recipe to fill up your pot.
(you need several support food recipes to rotate every time you eat that whole stock pot full, because you can't eat the same thing every week)
Drink - get a couple cases of bottled water and a couple boxes of drink mix (Gatorade Powder is awesome), and drink these throughout the day.
plan = Make a fairly consistent schedule to eat your 3 DELICIOUS mouth-watering favorite food meal and eat 2+ full plates.
in between meals heat up a couple/few helpings of your support food.
Never let yourself start to get hungry or go several hours without eating.
Your support food fills those gaps between meals or before you are about to go out.
Also great to work out before you eat.