Buying a house involves steps: assess finances, set a monthly payment limit including principal, interest, taxes, insurance, and fees, get preapproved, shop listings, make an offer with contingencies, complete inspection and appraisal, then close. Affordability depends on steady income, a 5-7 year stay, credit score (usually 620+), down payment (often 3-20%), and reserves. Compare loan types and lenders, research neighborhoods, and understand all costs. Protect yourself with contingencies and maintain the home post-purchase.