1: Do not enter into a financial entanglement with someone who is not your spouse.
2: Do not get an adjustable rate mortgage, no matter how attractive it may sound.
3: Ditto for an interest-only mortgage.
3: Check out the neighborhood carefully. Drive through during the day and at evening to get a full feel for it.
4: Be aware of your monthly payments. The mortgage people may say you qualify for X, but if you can't afford the monthly payments without living on ramen, you can't afford it. Make sure they tell you PITI - principal, interest, tax, insurance. THAT is your monthly payment, not just principal and interest.
5: Shop for a home with an eye toward the future. If you want to have children, don't buy a house that isn't appropriate for that.
Good luck and have fun! There are a lot of great houses on the market these days with reduced prices.
I agree with all of the above...and like I said, try for the 15yr payoff plan..that way if you want to sell in a few yrs you will be better off, really, it was great for hubby and I, we bought our first home with the 15yr plan. Sold it after 5 yrs and made a ton of money to put down on our new home.