Where the Mountain Meets the Moon is officially out of the running for best childhood book. It was at a bit of a disadvantage being a standalone up against series, but I have a soft spot for this book, and it did quite well against City of Ember. Here are some ways to get into the book!
A quick summary: Minli's family lives in a poor village at the base of the Fruitless Mountain. Life is hard, but Minli keeps hope through the stories her father tells. One of the those stories is of the Old Man on the Moon, who can answer any question. In an attempt to bring her family fortune, Minli sets out to find the Old Man on the Moon.
Buy Where the Mountain Meets the Moon here: SecondSale, Thriftbooks
WtMMtM is available on the Internet Archive, and there are probably copies in your local library
There isn't really an active fandom for this book, and I couldn't find any specific blogs for it, but there are a lot of reviewers that discuss and recommend this book all the time.