Call a real Estate agent! Normally, William E. Wood is a good place to call, because their service is reliable. They cater to your needs, and are respectful to you and your family. I have had good experiences with them, as my mother is a realtor herself, and the W.E.W agents are always friendly.
To buy a house, you first need to identify the house. It is only after this, that you can call the agent who at most times leave their numbers by the houses. Alternatively, you can visit a real estate agent or check out magazines on houses on sale.