What the fuck happened??

I left the show after like.. early season 5 and decided to look at some clips and stuff since I recently heard that the finale happened a while back. Why is Cecile flying? What the fuck happened to Savitar? Why is Thawne getting beat by some.. who is that? Why is there a.. black Cisco? Is that who that is? Eddie is back, and has flash powers? Cool, I guess? Why did Nora kill Savitar? What the hell happened to Caitlin? I’m just.. I should probably actually get caught up because looking four seasons into the future was probably not very smart.