So I was looking on the forum and I noticed that there was only one micro guide and TBH i thought it was a little light so I decided to write up my own guide which goes into more details I think.
2 The 4 main unit advantages
2.3.1 High ground vs Low ground
2.3.2 Arcs and Chokes
2.3.3 Army Order
3 Commonly used techniques for micro
3.1 Stutter Step
3.2 Staggering Tanks
3.4 Marine Splits
When most people think about micro they think of something small, however in starcraft it is short for micromanagement which is a misnomer for the most part. Micro refers to unit control more specifically relating to increasing their cost efficency when in a battle by using the 4 main unit advantages to help you. Micro can range from something as small as moving a group of units not in combat the the epic marine spread that has wowed many people.
2) The 4 main unit advantages
Now when we are talking about micro these are the four main aspects that people seek to use to gain an advantage in combat. The four advantages are Range, Speed, Positioning and Targeting. Positioning is usually the most important one as it is the advantage you are most directly in control of. Now I will explain these advantages into more detail
Range advantage is a very simple advantage to explain on paper as it simply means you can hit your opponents units farther away than they can hit yours. Good examples of this are Bio vs Zerglings, Bio vs Roaches, Bio vs Zealots, Vikings vs Ever other air unit ect. The main way to use this advantage in your favor is to use a technique called the stutter step which is going to be covered later in this post. To counter a range disadvantage you can do three things: keep moving forward or retreat or fake a retreat then turn around when he chases after you. As a terran you usually have the advantage of range on your side with units like viking with 9 range and tanks with a whopping 13 range.
The speed advantage is also very cut and dry, your units are faster than your opponents units. Examples of this are Reapers vs pretty much every unit and hellions vs pretty much every other units. There are several ways to use this advantage to your favor. If you have a speed and range advantage you can kite your opponents units and take very little damage to your own, however if thats not possible, you can use the speed to run around your opponents army and harass his base and force him to be pinned next to his base until he throws up a ton of static defense. To counter speed disadvantages you will need to leave some units back from your army or have some static defense to protect your base. Terran usually has a speed disadvantage in both matchups.