You can go to the public records at the county level. I however suggest you go to a local title company and have them run a complete title search on the property. They will check for taxes and other liens and judgements on the property.
If this property is bank owned and you are buying it through a Realtor all of this work should be handled in the transaction and the owners title insurance should protect you after you buy the property of any liens popping up.
If you are not familiar with purchasing on your own call a local REALTOR to assist.