This book’s Kickstarter campaign was funded 5 times the pledged goal of ~ 45K USD which is pretty impressive. I pledged $22 which I think was very well spent.
As a bonus, Leo offered one hour live webinar for the project backers at my level. But I had to miss it as it clashed with my Toastmasters responsibilities.But luckily he recorded the webinar and shared the recording, which I am yet to go through.
I will also take a while to start reading this book as I am currently re-reading the last two books I read.