There is a lot of food which you can prepare and then eat on the go when you're a busy student like we are. Dried fruit, granola bars, and foods than can be frozen and heated up for breakfast, lunch or dinner (we especially love banana bread) are major time savers.
I was also planning to make an instructable on sauerkraut, a very nutritious food with lots of great applications. (We eat it on our eggs for breakfast.) But it's already been done! You can find instructions on making sauerkraut here.
Lastly, investing in a dehydrator was one of the best culinary choices we made this year. When fruit is readily available in the summer (we run craigslist ads looking for people who want their fruit trees picked) it can be collected and preserved. Apple chips are a delicious snack food item, and a lot healthier than their fried potato counterparts!
We would love to hear back from you with your ideas for college meals, or requests for instructables on things you've heard are good.