Hello! When you say "this type of game," do you mean tabletop roleplaying games in general, or more specifically, RPGs with short, minimalist rules?
If you mean "how to play RPGs in general," it can vary a lot depending on the game, but I'd recommend searching online for "actual play" videos of people playing, and/or reading some games that have really clear advice for how they are meant to be played. The RPG you're commenting on now, Exhumed, is modeled on Dungeons & Dragons, but is a very pared-down approach.
If you mean "how to play RPGs that don't specify how to play," the philosophy tends to be either that you'll use what you learned playing other RPGs, or that the specifics of how to play aren't necessarily super important as long as you and your friends are having fun. Still, there's some great play advice for traditional, minimalist games like Exhumed in Chris McDowall's Electric Bastionland, and in this blog post.
I hope this helps! Feel free to ask follow up questions if you like. You might get even better answers by asking on Discord servers like the ones linked to from the 2400 page.