Basic qualifications are 640 or above (depending on lender) and/or two years of clean (no late payments) credit; 2 years of steady employment with the same employer; and max mortgage will be three times your annual combined gross income (if you make $80,000 combined, your max mortgage will be $240,000).
If you go conventional mortgage, expect a 15 - 20% deposit, if you qualify for FHA, minimum down payment is 3.5%. Expect to pay about 5% of the purchase price for closing costs (appraisal, inspection, recording fees, etc.), so start saving money.
Many banks and credit unions offer a one day seminar on buying your first house - call around and see if there are any in your area or even through adult extension/eduction at the local community college. A house is usually the biggest investment of your life and you should know everything you can about the process.