Looking at buying 1st rental property

[Jake Peterson]

I am looking into buying my first rental property and have a few questions. 1). Is it common to ask for the rental history of the property to see how full/vacant it has been for the current owner and how do I go about doing that? 2.) Most properties (multi family) I am looking at are currently full/ almost full. How do I tell if the current owner didn't just go out and get the property fully rented to sell? 3.) This is kind of the same as #2, how do I find out if the current tenants are "good" tenants? 

Any help/ advice is greatly appreciated.