"3. Terrans get their bread and butter with 3 buildings
Marines, Marauders and Medics"
Medics don't exist in the multiplayer, for healing you have to make a factory, starport and medivacs.
Also, if you want both marines and marauders you need at least 2 barracks with 2 different add-ons.
My Mario Kart Wii friend code: 2707-1866-0957