I came across a question asked by a new user. The new user was refered to as OP in the comment section. I'm not familiar with what it means in that context. Can someone clarify this for me? Is there a particular background story to that acronym?
It can mean Original Post, or Original Poster, and often used interchangeably both here and on the web in general. It's very old internet slang/shorthand that pre-dates Stack Exchange/Stack Overflow. See "Does OP mean “original poster” or “original post”?" on the English stack exchange for more info and examples.