My first exposure was Halloween, which didn't endear me given my love (even at 14) of the original. I do enjoy House of 1000 corpses as an homage to 70s hillbilly horror and Devil's Rejects is an decent follow up and I've not seen the third one. I mean, anything with Bill Mosely is gonna catch my attention.
That being said, I don't know if I've ever met a self-respecting horror fan who would claim you have to like them to be a horror fan.
Dead Meat has just started a kill count of the Firefly series, which gives some fun behind-the-scenes details and offers a decent run-through if you've not seen them and don't fancy sitting down to watch in full.
https://youtu.be/fE3j_ghacoo