I remember seeing Skellig Michael right after they finished filming for The Force Awakens. We never got to the island itself, just saw it from Dingle peninsula, but it is a wild, beautiful place. The book looks interesting, I may check it out!
Readers in the UK and Ireland have pointed out that the link I posted above does not apply on the other side of the Atlantic.
Here is the link for UK readers: https://www.amazon.co.uk/First-Monk-Last-Jedi-Pilgrimage-ebook/dp/B0787135JN/ref=sr_1_6?s=books&ie=UTF8&qid=1513380572&sr=1-6&keywords=skellig+michael