Have your cash ready, 10% down day of sale, outbid the primary lien holder. Be ready to deal with any secondary liens have a good attorney on retainer and if you've done all your research In advance. You may own a property after the judge confirms the sale. Or hire a good agent and buy something already listed with a Realtor.
You sure have a lot of foreclosure questions. Based on the flurry of postings, I am going to guess you are already out of your depth but dreams of easy money flipping foreclosures still dance in your head.