Preparation for Doomsday

Avengers: Doomsday is one of the most anticipated movies of the year and one of the few Marvel movies I'll watch in a while, but I know next to nothing about Doom.

I've already read Secret Wars 2015 which Doomsday is going to take inspiration from. I thought it was great, just not peak as others call it.

Which other good Doom comics can I read so that I can learn more about the character in preparation for Doomsday?