Matchmaking, Forge, Campaign or Spartan Ops?
I will probably play a few campaign missions. Then jump into matchmaking then more campaign. Later on… Spartan ops. Then I will finally check Forge
I usually play Forge first in order to get to grips with all of the weapons, just so that I can get a feel for them before actually using them in combat.
I never touch matchmaking before I complete the campaign on Legendary.