Do You Have a Book?

i j l collins wrote the simple path to wealth. And he's very commonly said, everything in my book you can find on my web site. But there's people who don't go to my web sit so i put it in a book. He obviously did a lot of editing and making it polished and good for book form. We understand this but when is something an article or a video or a podcast, a loan, and when is it part of a book? How do you turn that kind of content into a book without being massive amounts work to tun a transcript into a chapter?