When I first started watching the show it took me a while to get into it, but eventually I did. I gave the first few episodes of Murder house a try and wasn't very interested but kept watching and found myself more and more engrossed. Also helps if you are really paying attention/aren't watching it in the background while doing other tasks. The first season really pays off in the end let me tell ya.
The second season/Asylum was the best tho. Close second is Murder House.
Coven was a really fun season, not as scary, but was really entertaining.