Do not Bother Learning Traveller, One Ring, Star Trek any Edition, Conspiracy X, or Song of Ice and Fire. I generally find the 6 or 7 players seeking those games here from the whole site over a week, then run it for 6 months, then switch off. so stay out of my staked out turf, pro favor. I do chose to run these, because they are more narrative style, less slashy, more filling, and I don't want to compete with and screen out the 500 players trying to dive into the 50 games of PF / 5 E starting up every week. If you want to be the gun for hire, PF, 5e, [Maybe 2e, but Gold has that surrounded and well served already], Fate Core, and (Saga, or Age of Rebellion for) Star Wars and you got 90% covered. Good luck.