Fandom Classics

I'm completely new to this fandom so, of course, I had to come look for fanfiction. I've only read a few fanfics and I just don't know where to start because there are so many stories out there. I know the show has been out for a long time so I'm looking for the fandom classics/your go-to fics.

I would prefer Reid centric stories. He is my favorite character. And completed fic only.

Self recs are loved.

Thanks!