A bit Meh, really.
This is written quite badly; Gardner writes like he's speaking so it's all in the vernacular, and he repeats himself in the same sentence as if he's talking to someone.
He loves to big himself up too, there's a section that's supposed to dispel myths about him but it's just a "Someone said X happened, it didn't".
Yawn.
Full of typo's too, sorry but this is an awful read.