50 Licks is not a biography of the band. Rather, it takes 50 moments from their 50 year career and largely lets the key players - both the Stones themselves, and their friends and associates, tell the story.
The interviews are culled from archive sources as well as new ones conducted for this book. There may not be many startling revelations for the hardened Stones fan, but it's an interesting read.
All the key points of their career are covered, from the early hits, breaking America, the rivalry or otherwise with The Beatles, the death of Brian Jones, Altamont, Keith's drug bust in Toronto, the Mick and Keith squabbles of the 1980's, and onwards towards the present day.
Allowing the interviews to speak for themselves is probably a good thing, as sometimes the book does descend into the breathless adoration that you might expect to find in a fanzine or on a website. For example - "The Stones have set the standards and raised the bar at every level of their evolution. They will certainly not go out without a whimper. One final stab at proving to the world - and maybe even proving to themselves - that they were, still are, and always will be the Greatest Rock 'n' Roll Band in the World!"
So, if you want an in depth analysis of their life and times, it's best to go elsewhere. 50 Licks is an uncritical but nonetheless entertaining celebration of a group of true Rock 'n' Roll survivors.