OK, i’m totally new, really want to play the deathknight as I heard it’s perfect to get into the game, learn, level up. All the builds I find seem old or a bit esoteric in their explanation. So if anyone has a good example, what type of damage to focus on, what masteries to start with etc. I would love you forever. Is it more a 2H or shield class? What should I go for before farming the krieg set?
Welcome to the game and to the forum. 
Have a look at Stupid Dragon’s beginner Death Knight build
oh awesome thank you