So for my last post, I wrote about TTRPG-inspired books and linked to a few rulebooks to help burgeoning GMs or players get started. What I only did once, and didn’t point out, was a link to a System Reference Document, or SRD. That was the Pathfinder link; there’s also a Pathfinder 2nd edition SRD, a D&D 5th Edition SRD, a Gumshoe SRD, and many others. These documents exist so that companies and GMs can create new adventures for existing systems or branch off these systems to develop their own games, as Pathfinder did from D&D 3.5e. They’re also an excellent place for Players and GMs to learn the rules of a game, and if all you can get hold of is a campaign book from our collection or you want to create your own adventure, these are a great, free place to start. They don’t contain all of your options and won’t have trademarked creatures in them, but they have enough to run a campaign or create a character; I know this first-hand.