This is just a quick overview but basically you need to look for upcoming foreclosures in your area that are published in the newspaper or your county courthouse. Do a Google Search and research tax foreclosures and your area because you’ll also have to register for the auction before being able to bid. Most auctions require some paperwork to prove you have funds and deposits down before you can attend. You need to be able to pay for the property if and when you are the winning bid. Keep in mind too, foreclosure and tax auctions have rules in most places that you cannot immediately inhabit them or begin renovations because there is a grace period for right of redemption of the current owner. There is also a processing time for changing over deeds and funds, etc. You may have to wait a full year before being allowed to renovate or move in so do your research and pick up some great books. Here is a quick guide from SF Gate.