Possible good deal for first rental property?

[Michael Morgan]

I was perusing craigslist and found an ad for a duplex for sale near downtown Indianapolis.  The seller is asking $36,000 for a 2 unit, 3bdr/1bth duplex.  Claims no repairs are needed, low maintenance property, and both units currently rented out and cash flowing $1100/month.  

So, from the ad it looks great, but I would obviously need to run the numbers.  No address for the property was given and I'm not sure where to begin without at least an address in checking this place out.  Should I contact the seller directly and just ask them all of the questions I have about the property, including property tax and ball park insurance rates?  Any and all responses are appreciated.  Thanks