This challenge is really simple. Read one book from each state/UT in India. The challenge is primarily to help readers discover Indian authors across the country and get a feel of the culture and people originating from the different states. A book's length walk in their shoes! 

The books can be read in their original tongue or through translations or in English. If you're unable to find an author from a particular state, then you can read a book set in that state by a non-native author. 

There is no set end to the challenge, so take your time and start reading!