If you are getting the bike because gas is going up and you want something more fuel efficient, I'm guessing you are going to be commuting to and from work. I commuted on my bike when I lived in LA. I would suggest the following things to consider.
1. Get a riding suit, check out
www.Aerostich.com, that is waterproof and has reflective panels.
2. Get riding boots. Sneakers or even regular boots will do little to protect your feet when you crash (you will crash eventually, may not be going fast, but it will happen if you ride long enough).
3. Spend money on a good helmet and make sure it is comfortable. I have a Shoei multitec that allows the front to lift up. Very handy as I wear glasses.
4. A bike with hardbags is a great convienece. I could actually do my grocery shopping using the hardbags on my bike. Also, makes a good place to store your helmet and riding suit.
5. Get earplugs and wear them.
6. Take the MSF course.
7. Pick a bike that gives you a more upright riding position if you have a long commute. Sportbikes can put stress on your wrists and neck and are not comfortable for a long days ride. They also make it more difficult to look up and be aware of what is going on around you.
8. It's you against the cages. Be very careful as drivers have a hard time noticing motorcycles.
9. Plan on 10 extra minutes in your commute time to suit up, warm up and get started.
Bikes are alot of fun. Wish I weren't selling mine. It's getting picked up tomorrow.