Take your time whenever you deal with tax lien auctions. Remember that there are always good transactions out there but too often other investors would let the attractive investment cloud their judgment, and screw things up. So, prepare yourself and do not rush.
It really does not matter if you have been investing in properties for a long time. A tiny mistake can cost you a fortune if you do not take your time in reviewing the details, big or small. Getting a real good look at each deal made, with unbiased perspective is also the key to a secured and successful financial future.