I would like to know if there is an open license or free text that explains about roleplaying games, GMs, Players, etc. so that people don't have to reinvent the wheel every time?

Or barring that, what guidelines have you used when you incorporate such text into your game?

Thank you!
-David-

That part is not very in-depth in most games - and more significantly, it's not even that universal, or even useful in most cases. You'd probably be best off writing your own explanation that reflects your own understanding of what people do when they play your specific game. Still, if you want to copy this verbatim from somebody else, you might look into any of the open license games out there. They each have their own way of dealing with the introduction, and you often can lift that text directly for your own use with minimal limitations.

Greg Stolze wrote how to run and how to play RPGs. I've never actually read them, so I'm not sure if they're what you're looking for.

Sanglorian wrote:
Greg Stolze wrote how to run and how to play RPGs. I've never actually read them, so I'm not sure if they're what you're looking for.