This show isn’t for everyone, I will readily admit that. It is loosely based on a Marvel character named David Haller. Haller is the son of Charles Xavier and a non mutant woman. He is possibly the most powerful mutant to ever live. He also suffers from dissociative identity disorder, which makes him fairly unstable.
The show is a visually stunning. really really weird but brilliant at times mind trip. It takes great liberties with traditional television storytelling methods which turns off a lot of viewers. Its a show that requires a little effort to watch. It is not a show you can tune out to the background for 15 min and then start paying attention again and just figure out what’s going on.
Aubrey Plaza is fairly brilliant in this show by the way. If you are a fan of hers its worth watching just for her.
I’d recommend going back and starting from the beginning. FX has already announces season 3 will be the final season so catching up won’t be hard. Its just 19 episodes total in season 1 and 2, plus 8 more in season 3.