We'll be starting our raiding career this week. At the minimum, we should get through at least these bosses on our first night. Familiarize yourself with the fights with the videos below. Fatboss is the standard for fight guides, while Hazel is more to the point (However, not everyone is a an of her narration.)
Garothi Worldbreaker:
Fatboss
Hazelnutty
The Hounds of Sargeras:
Fatboss
Hazelnutty
The Antorian High Command:
Fatboss
Hazelnutty
Portal Keeper Hasabel:
Fatboss
Hazelnutty
Eonar:
Fatboss
Hazelnutty
Imonar the Soulhunter
Fatboss
Hazelnutty