Getting Started
You should first build six more SCVs (ten total). After each oneis made, make it gather minerals. The second to last one make build a barracks. Then make the last one make a supply depot on one side of your entrance. That one should finish before the barracks so, make anouther supply depot on the other side. The barracks will finish shortly after so lift it off and land it between the two supply depots. Now build a bunker near the barracks and supply depots and train four marines and a few more SCVs. Make the first SCV build a refinery and the second mine minerals If you only have one gyser, make the next SCV mine gas, if you have multiple gysers, make the next SCV build anouther refinery. Also place the marines in the bunkers and build an academy and an engineering bay. Build three more SCVs for mining minerals and have three SCVs at each refinery. Also build a turret near the bunker and a comsat station. After you have enough energy in your comsat station, scan all of the start locations for your enemy. Now you should be racking in the money and you have a small defence.
Building Your Attack Force
Build two more barracks and make them all build (in this order) two firebats, two marines, and one medic. Repeat this step for each barracks at least nine times. Now its time for the big guns. Build a factory and attach a machine shop to it. Right away, research seige mode and make three to five tanks. You might want to upgrade weapons and armor for infantry units now too. Next build an armory and two to three starports. Attach towers to them and research cloking. Next build six wraiths and enough drop for your ground units (not the SCVs).You should also be building turrets throughout your base. Build a science facility and connect a physics lab to it. Research yamato gun and start building your battlecruisers. If you dont already have three starports you should build anouther one. You could also skip the battlecruisers and attack sooner.
Expansions
While building your attack force, you should also expand. You just have to remember to always defend your expansions. If you dont and someone attacks the expansion, they will probably build there.
Attack
This one is easy. First use your battle cruisers to destroy their perimeter defenses (if they have any) And fly your dropships in and unload your men next to their resorces. Or if you decided to skip the battlecruisers, fly your dropships past or around their perimeter defences (if they have any) and drop your men next to their resorces. You should also bring your wraiths along to accompany the battlecruisers.
