While I think the book was worth the read, I think Isaacson was wrong on so many small and big things and failed to go into others, and he really did a poor job with the book. I recommend the two Hypercritical podcasts about the book, which really goes into some depth about the problems with the book:
http://5by5.tv/hypercritical/42 (starts 18 minutes in) http://5by5.tv/hypercritical/43