I'm going to put the TL;DR where it belongs -- at the beginning.
TL;DR: The book's good and if you're into old games, you should read it.
Howard Scott Warshaw (HSW) weaves an interesting story about his time at Atari, through his current life as a therapist, weaving the whole story in flashbacks framed while writing from the famous dig in the Alamogordo dump for the storied dumped inventory of E.T. cartridges dumped in the desert by Atari after the big video game crash of 1983.
HSW covers an interesting time at Atari - the period after the four founders of Activision left Atari, through to its eventual purchase by the Tramiels. In that time, he manages to crank out Yar's Revenge, Raiders of the Lost Ark (which I wish he'd talked about more tbh), and E.T. The interesting thing about E.T. being that because of Atari marketing's desire to release the game for the busy Christmas season, he was given just five weeks to make the game, which at the time was something that typically took at least six months.
The whole book's full of amusing anecdotes and wisdom, and if you're into classic games, you should check it out.