If you’re brand new to the Starcraft scene, then you may not know what the term “macro” means. Here’s what it is: It’s your ability to control the bigger things going on in the game you’re playing. Things like making units, buildings, keeping all your minerals spent, etc.
One of the biggest problems that newer players have is this pattern: Build up a force, attack, build up a force, attack, build up a force, attack. So basically you’ll focus solely on macro first; making units, building their base up, maybe expanding. But then when you go to attack you start focusing solely on micro management, which is controlling your units. So then you completely stop making units, your mineral count goes through the roof, and when your army is finally killed you have 0 units.
This is BAD, any kind of counter-attack at that point will usually cost you the game, even if you do have 3000 minerals banked there’s just not enough time to use them.
Instead of doing that, you should hotkey your production buildings to 5, 6 whatever is comfortable and as you’re making your attack you keep building units. That way, once your force is dead, you scroll back to your base and you already have a ton of units ready to go attack again or defend the counter-attack.
If you find yourself having trouble with this, here’s something you should focus on… Instead of being so obsessed with trying to micro manage your army like the pros, throughout the whole game focus on these three things: making SCV’s, training units, and keeping your resources low (by buying stuff!).
When you master those three things, you will find yourself climbing up the ranking ladders just because you’ll have so many units that your opponents just won’t be able to compete. Even if you completely botch your micro management here and there you’ll be so far ahead of most players that it won’t even matter.