Researching property info question... Please help. :)

[Nino T. Barone]

Ok, so I've spotted a house on Zillow that is for sale at $75k. The house is clearly worth more, in fact Zillow's "Zestimate" says it's worth $203k. I went over to the property apprasier search site for the county and feel as if I'm blind to what I'm looking for. I guess what I'm asking is, how do I get more details on the property, for instance, why is it selling so low, and if maybe this is an opportunity for subject to or wholesaling. Can somebody tell  me what steps I should take to learn more about the property and what may be flags for an opportunity? I mean, obviously driving there and knocking on the door to talk to a person is my first thought, but what if the house is vacant?

Also, if I can acquire it through a subject to deal I'd like to actually put my family in it since it's an ideal location for us. What should I look for before taking that step? Title searches, any delinquencies maybe? 

Thanks,

Nino