The link that you provided is to a posting by RealtyTrac that is really a come-on to get you to sign up for their subscription reporting service. RealtyTrac is not a real estate company. RealtyTrac does not sell houses. RealtyTrac is a reporting service. They take information from public records about foreclosures, notices of default, lis pendens and other such filings and report them to their subscribers. Information from RealtyTrac can have value for those who understand what they are getting and how to use the information but RealtyTrac postings on Trulia.com are abbreviated versions and are misunderstood by many who think the postings are showing properties that are for sale at very low prices.
For information on how to buy a home, check with a local Realtor who can explain the process and give you valuable assistance.