This is one of those books I'd been meaning to read forever, and had read bits of since it's so often referred to in other sources. So I finally did, since it came free with an app I downloaded (which also makes it the first book I've read all the way through on the iPad). I enjoyed it very much, even though it was a bit uneven at times, at least whether it's actually about Joseph Smith or the Smith family. Joseph is the focus in the first half to 2/3rds of the book, but then he's hardly mentioned.
That last part really emphasizes how hard the Smiths had it. So many family members dying.