I didn't throughly read the other posts, so sorry if I repeat.
You can look on
http://www.realtor.com/ to see what kind of houses you like and what different houses in your price range feature. You may also find specific houses you want to look at prior to meeting with your agent.
Don't be distracted by the seller's personal style. Is the house truly awesome or does the owner just have awesome taste in furnishings?
Look at little inconsequential things that might bug you down the road. For instance, half of the rooms on our house have wall vents that are off center. I know that sounds minor but a lot of furniture and pictures look off center because of it. It drives me nuts!
Ask for utility costs for the prior year. A "great deal" might not be so great if you have to pay loads more in one house than a slightly more expensive but similar house.
Don't get discouraged and don't go look when you're in a bad mood.