Since you like writing and books, a project I'm involved in:

Alexandria

Library of Alexandria

Alexandria is a digital library, utilizing Nostr events for curated publications and wiki pages.

It needs some fixing on this latest version, but that will likely be taken care of soon. Also, another lovely and talented nostrich has been building this: https://decentnewsroom.com/ Which you can use to publish long form content. Also still a work in progress, but... Most of the clients are in various shades of disarray, and I rather like that. It is very Cypherpunk in a way.