You will be able to host your content on the decentralised network and if somebody is interested in buying your book if you have tagged the book to be premium content, then they will be able to buy rights to access it and consume it on the files.fm ecosystem.
It is nice to see your project among those who have survived this difficult competition. I remember a few months ago (in the Autumn) you just announced your product. During this time, much has changed. Some of the projects turned out to be fraudsters, and you are still afloat. Perhaps I should pay attention to your tokens again. Tell us where you will send tokens not sold and do you have a bounty now?