how do buy orders work? /u/No-Tourist-3081 Steam on Reddit

I need this to be explained to me in the simplest terms ever

I’ve been looking into buying stuff from the Steam community market and Marketplace.tf, only looking for Team Fortress 2 cosmetics like hats, shirts, accessories, and whatnot. I’m very new to Steam and PC gaming in general and I’m hesitant to go ahead and buy anything without knowing what I’m doing and spending money on something I don’t even know I’ll get. I’ve been trying to use google and look around for some sort of easy explanation to what it is but everything feels way too complicated to me to understand.

I need this to be explained to me in the simplest terms ever

I’ve been looking into buying stuff from the Steam community market and Marketplace.tf, only looking for Team Fortress 2 cosmetics like hats, shirts, accessories, and whatnot. I’m very new to Steam and PC gaming in general and I’m hesitant to go ahead and buy anything without knowing what I’m doing and spending money on something I don’t even know I’ll get. I’ve been trying to use google and look around for some sort of easy explanation to what it is but everything feels way too complicated to me to understand.