If Terry Pratchett wrote a prose revision of the user guide to my iPhone, (a) I'd memorize it and (b) I'd know how to use the bloody thing. He's my author of authors. Like many Pratchett fans, I honestly resent when he writes outside the Disc World, but only for about five minutes, after which I'm convinced that "The Wee Free Men" or "Good Omens" is my new best friend and favorite.
"The Long Earth" is all that and a salmon - makes me look forward to getting Alzheimer's - he's still a genius. In "The Long Earth" Pratchett is not less repetitive than he can be in the Discworld, yet he is engagingly, enthralling and all the other ings. Pratchett defined Gods for me. What does that make him? Get this book. It will spin your mind.