Need help in Rockland, Orange, Westchester Ctny NY

I live in Rockland County, NY (20 min north of NYC) and recently went to the county courthouse to look for potential wholesaling opportunities. My problem is that I have no idea what I am looking at. I looked at some tax lien stuff from the past year and there was all sorts of “legal-eze” in there that didn’t mean anything to me. In a perfect world there would be big red letters saying “they still haven’t paid the tax lien,” but alas, it wasn’t to be. Any suggestions?