“The Simple Path to Wealth” is the book by Jim Collins, that compiles and re-organizes everything in his Stock Series posts from the blog he started a few years ago to teach his daughter about finances.
I read his blog from beginning to end once and then just his Stock Series a second time. And then when I read the book I didn’t get much new (it was my third time reading the material after all) but the book is better organized (obviously) and is a bit more succinct (Collins tends to be a bit verbose in his blog), so if you read a few of his posts and they “click” then you may want to try and read the book. Also, having the book makes it easier to share with friends that could benefit from the knowledge (kind of part of my idea when I bought it).