Taxation on more than one property

I had one house in which I live (also had a housing loan over it) and another house that is inherited(now I am the owner of this property too) from my parents(no one lives here from the time it is inherited to me, it is vacant). Both the houses are in a different cities.

1) So how to file tax. Do I have to show both the property or can only show the property in which I actually live? 

2) If to pay on both the property, then can it be considered self-occupied? And how to calculate total tax iability in that case

3) which ITR form to consider (ITR-1, ITR-2, ITR-3 or ITR-4).

Please give answers in detail.

Thanks in advance