I was one of the first to read Jim Collins' book, The Simple Path to Wealth, and a huge fan of his blog series. You can get his book for free on Kindle or Audible (enroll in trial). I credit his series as one of the main education sources for me going from zero knowledge/scared to death to now 100% confident in my investments and advice to others.
The blog series is here:
http://jlcollinsnh.com/stock-series/Agree with solon; as long as you don't mind a bit of overlap in the different chapters and a bit of older information that has since been updated in the book, the blog series is fantastic and free. I have bought the book as a present for a few friends tho and consider it a great bargain, so if you enjoy his blog series and get something out of it, you might consider buying a copy of the book to support him and pass the knowledge on to friends or family if they're open to the idea. That would be the "why pay for it" part - because you got great value out of his labor. ;)
And I've also requested my library to purchase his book too (you can do that!). They may not, but if the buyers take a shine to the idea, it might be available that way for you and others.