I’m working through organizing and tagging my digital library of RPG books - source books, rules systems, adventures, character pregens, etc.
A lot of these came from Humble Bundles, but there’s a lot from DMs Guild and Drive-Thru [sic] RPG,
All together, after running some sophisticated de-duplication, I’m just short of 1400 titles. Admittedly, some of those are single-page character sheets, but still!
In non-game books, my digital library has - literally - thousands of titles
I’ve been slowly, methodically working my way through marking them all up with useful metadata, de-duplicating the collection, and ensuring they’re available in multiple formats (epub, mobi, pdf)