Dana, You start by learning what it is you are thinking of committing to financially so you can make the correct decisions. If you are asking about local tax sales then going to this site will assist you in getting information...http://www.lakecountysheriff.com/civil/sales.htm
If you are looking for information for tax sales in Indiana then try this...http://publicrecords.onlinesearches.com/Indiana-Foreclosures-and-Tax-Lien-Sales.htm
If you are talking about learning more about REO/Foreclosure then perhaps this will help. The Banks and Gov. maintain sites where you can get information on their properties for sale for Free. Sites like these...
These sites will also have information on the purchase/bid process.
You can find the links to the Bank/Gov sites and more here...http://www.mortgagenewsdaily.com/wiki/REO_Database_List.asp ... http://www.biggerpockets.com/bank-reo.html
I don't know if you've checked this out but it has a lot of good buyer information and tools..
Hope something here helps, Dunes