1. Build SCV's until your suppy is at 9 (Your tenth SCV should be about 1/3 of the way built).

2. Build supply depot at location of choice (Continue building SCV's one at a time while you build. Do not que them).

3. When supply depot is nearly complete stop building SCV's until you have 150 minerals. Build barracks when you have 150 minerals, then continue SCV production as soon as you have 50 minerals.

4. Build 4 more SCV's while your barracks is under construction. By the time it finishes you should have 300+ minerals. Upgrade your Command Center into an Orbital Command. Build one marine at your barracks.

5. Set your SCV to begin building your second barracks, place one scv from your mineral line to build a vespene extractor. Continue building marines at your first barracks and build 7-8 more SCV's. Build supply depots accordingly, when the extractor is completed place 2 more SCV's on it (3 SCV's optimally harvest gas).

6. Build marines from your second barracks, place a reactor on your first barracks. Continue making marines from your second barracks and begin building a third barracks.

7. When the reactor on your first barracks is complete begin producing double marine there. Stop building marines at your second barracks and build a tech lab (To get marine shields and stimpacks). Place a reactor on your third barracks and begin building a fourth barracks.

8. From here on out you can do what I do and pull 2-3 SCV's off your mineral line and begin to expo, as well as build more barracks, build two engineering bays for upgrades, etc etc.