Guys, having a few months worth experience in living alone (and managing to lose ~60 pounds to become fit for uni) I can give a few tips regarding simple and wholesome eating.
1. Master the use of these 3 items: Bread, Milk, Fruits.
You can never go wrong with these, pretty cheap and readily available and easy to consume. You can substitute rice for starch but I kind of like bread better, since I can control my portions, (unlike rice, where I tend to gorge, and needs more supplements, like curry dishes etc).
Eggs also form a great, cheap wholesome food item. Easy to cook and eat in a variety of ways. (but may be bad in excess)
2. Make sure your fridge is always stacked with basic veggies like Potatoes, Onion, Lettuce etc and Fruits
This ensures the most important things. Whenever you want a quick snack, you always have your fruits/quick sandwiches to fall back on, instead of being tempted to heat up some instant-noodles.
3. Learn to make stuff, which is easy and quick, and can be stored cold for days on end, reducing your work.
For me Soup does the trick. I make a whole big pot of that stuff in one go (takes about an hour) and can store that thing for over a week, having a heated-up bowl whenever I feel hungry.
Since I usually have my lunch at my university canteen, that leaves me only with breakfast and dinner, for breakfast simple sandwich+milk+eggs does the trick while I have a huge bowl of soup for dinner (excellent for maintaining a diet too), you can also stack other items like sausages, etc to make quick veggie dishes if that's more to your taste. Careful on the pasta/noodles though, you don't want to have them for 3 square meals a day.
Fruits and quick kitchen disasters for the hunger pangs.