I just finished this and was surprised by how short the book was. There are many pages filled with photographs and lyrics, but George's actual autobiography section is under 100 pages long. It's really more of a quick overview of his life and interests. If you're looking for lots of details and secrets about his time with the Beatles, this is not the book for you. George pretty much glosses over his Beatle days, and I don't think he even mentions his divorce from Pattie Boyd.
However, this is a nice read if you want to get a feel for George's character and personality, and the lyric facsimiles are a plus. I also liked Olivia Harrison's loving introduction about her time with her husband--you can tell that she really loves and misses him. Overall, I would recommend this for Beatles and George fans, but don't expect lots of information from it.
Lastly, one thing I didn't quite understand was why Derek Taylor was not listed as a co-author, since he also wrote long sections for this book.