This is a great document to get new designers thinking about how one page ttrpgs work. The text is user-friendly and I love how many examples are featured with each section!

good

Fantastically helpful conglomeration of how-to and what-else-you-can-do tips.

This is such a great written guide. It helped me understand games from the development side, which helped me understand games as a GM, player, and writer. A great read even if you do not plan on hacking games.