To add:
1. Busses
They're generally good, on schedule, and make getting around easier. db posted the phone number to tell you when they're coming, but if you use a crackberry or iPhone bookmark this site
U.Va. Mobile / Search, and then you just type in the stop number. Also, if you're coming home late from a fraternity party, or wherever, yellow cab is cheap (under $10 from far away houses on Grady to new dorms) and gets you back safe and sound. Plus if you don't have any cash on you, they can bill it to your student account.
2. Libraries
They're everywhere, just find someplace to study. My personal favorite is Clark, but the basement lounges of new dorms are pretty quiet places to study too. Greenberry's is decent coffee, but coming from a big city with a Starbucks on every street corner, I do miss having easy access to Starbucks. The only one near by is on the corner and isn't open particularly late.
3. Dining
As db said, Runk has considerably better food. My suggestion is, if you're on the Northline bus coming back from class with friends, just ride it up to Runk, it's worth the trip. Definitely just take to-go boxes filled with cereal, and fill a couple of cups with milk. Fill a box with cookies too and save yourself some money.
As for eating out, the White Spot and Little John's are always good for a midnight food run. Lemongrass on the corner is good for Asian food, and I can't remember the sushi restaurant's name, but it's good too. College Inn, Coupe's and the Virginian are good for a nice, informal lunch or dinner. Christian's pizza is good, but really greasy - College Inn is better. Norbits has really good burgers, and you order them with a scantron. Bodos is great for a good, cheap breakfast or lunch.
4. Classes
Wait, there are classes
But really, don't worry, you'll get the classes you want.
5. Books
Amazon is probably your best bet. If you are e-school, just buy them now, they are cheaper the earlier you buy them, and it' not like you have a choice of courses anyways. For things like solutions manuals, just split the cost with a friend. For things like Mastering Chem, buy it, you have to - ie, don't buy a used chem text unless it is cheaper than also buying it with the extra mastering chem (~$45).
6. What to have in a dorm room
A fridge is essential, bring lots of bottled water for move in day. A microwave is nice for ramen at 3 am. The more fans the better, the first couple weeks are hot. A rug is important. TV is nice, although I didn't watch it much, and my TiVo rarely got used, until I got home and watched the full seasons of just about everything I missed over the year.