There's a hot new Dapp by FlexDapps... https://flexdapps.com/home/ where I'm selling some abstract graphic novels. The name of the specific Dapp I'm using is called Enzypt. I've uploaded my content as PDF files...
You'll need Metamask and Ethereum. Here's my page: https://brianxv.wixsite.com/home/enzyptstore
Read next
From @brianxv