Start at the beginning
I suggest you Learn what the home buying process involves, learn your rights and then interview Agents to select the Best one for you. It is your financial commitment/obligation and your responsibility to choose wisely.
Hud has an Excellent site/information for homebuyers and they suggest 9 steps...
1. Figure out how much you can afford
2. Know your rights
3. Shop for a loan
4. Learn about homebuying programs
5. Shop for a home
6. Make an offer
7. Get a home inspection
8. Shop for homeowners insurance
9. Sign papers
I would suggest reading through this information before making any decisions....You may learn of classes, free counseling/help that may lead to Financial assistance you are unaware of...Check it out
Also the site provide info on where to find all the Gov. Foreclosures/Properties for sale
The Banks also have sites where you can learn about their REO's and see their listings/properties for sale..
You can find links to those sites here...http://www.mortgagenewsdaily.com/wiki/REO_Database_List.asp
Also if you are interested you can find all the Current Gov. Loan Programs here on a site created by the Fed. Govt. for the public. You can get specific information, compare options, or take a short questionnaire to determine your eligibility for each program.