Hello,
I am aware that, in the past, some have created guides for new users, but I would like to make a detailed guide for both macro and micro for any new players having trouble. If you're having difficulty with getting above 1300-1400, follow these steps.
When you are playing, the primary goal in the beginning (especially on short maps) is to focus on tower control. If you don't already know, if you use place a unit next to the tower, a red bar will begin to come to your side. Once it is on your side completely, it will disappear. This signifies that you are now in control of the tower, which means you get 20 gold every few seconds. This is actually quite good--equivalent to 1.9 miners--so it is a very good bonus to have.
To take the tower, begin with buying 1 Archidon and 1 Swordwrath, or 1 Archidon and 1 Miner. These, in my opinion, are the best starts, for they both hold a good army power, and (the latter especially) have a decent economy, as well. Try to overwhelm their forces, and push them back. You can then capture the tower with your Swordwrath or Archer, giving you an economic bonus so that you can focus on a stronger army.
This will work well in the 1200-1400 stages; just remember to build up more archers and swords, (while buying miners) and remember to try as hard as possible to obtain control of the tower. At about 8 miners, put 2-3 on mana, and begin to buy spears and archers. Every so often buy a miner to boost your economy.
Master doing this--it can be difficult to balance your economy and army, but after 5-10 matches you will get a good hang of this. Become used to this macro and be able to do it every match before moving on to micro.
The next step it to learn some basic micro. Micro is the control of units, and is fundamental once you are above 1400 or 1500 with the above macro (which is the building and timing of units.) Micro can be tedious, and will take practice before you can become confortable with it, so don't worry if you are having trouble with it; you'll get the hang of micro control after a while.
There are a couple of different kinds of micro. One, is just moving your units around, and making them attack/defend/garrison. Become used to doing this and focus on reacting to the enemy. For example, if you notice that the opponent has a Shadowrath, move your Magikill behind a miner wall to protect it.
The other is techniques that give you an edge in battle--kiting (running backward and shooting at the same time), cycling (utilizing multiple units to keep them alive as long as possible), etcetera.
Micro can be some of the most difficult parts of the game, especially when you've never learned how before.
Here is a video on G-Kiting (credit to WyzDM):
Here's a Micro Guide that will explain a lot of useful micro, by Jerrytt:
http://forums.stickpage.com/showthread.php?77732-Micro-Tactics-Encyclopedia
Keep practicing this, and you can rise a good amount of rating.
Contact me if you need help when I'm online:
Username: SHAD0VV (that's a zero and two V's)
Code: 787