I've read many books on McCartney and the Beatles in particular. This is one of the best; it continues until the present day (so it'll date!), it speaks to people when and where it can and it contains a number of previously-unearthed facts. McCartney doesn't come across as a sait; by the end of it we understand his flaws and why they're there, but he emerges as much less of a cartoon character than some of the coverage he's had would have us believe.