Rush Basics

Speed, speed, speed. If you find yourself just staring at your screen waiting on something to be constructed or researched, you are not managing your time correctly. If you are rushing you should have your hands full of things to do.

The unit that you intend to rush with determines which buildings you need to construct and in what order. If you plan on rushing with marines then there is obviously no reason to build a reactor. Start by building a supply depot or two, then your barracks, then any additional supply depots if you want them. I usually like to have at least 3 supply depots but some people prefer less.

As you are constructing your buildings you should be gathering additional resources with your scout. You may want to create another scout to gather resources faster. I like to gather resources close to the enemy base first so they do not get them. That probably won't be all of that useful against human players though because base locations will probably be random.

Once the unit that you are going to rush with is trainable, start pumping them out. Manage your resources between units and any additional buildings you want to build. Be sure not to construct any buildings or research any technologies that you do not need. Just remember that you are using all of your resources for a specific task. Once you have a fairly large force, start your rush. As you are attacking the enemy you need to continue pumping out units. If things are in your favor then you should have a victory in your hands.

To sum it up...Be decisive, be quick, be smart. Don't waste time wondering about your next move. Know what you are going to do next. Manage your resources for your specific goal. Don't waste them on anything you do not intend to use. Don't stop training units. Even if you think your force is big enough for the job you should keep training units in preparation for any surprises.