-You start out with 4 scv's-(you already know that)
-Immidietly create another scv
-(you should know that, too)
-Build eventually 10 scv's, but your 8th one builds the first supply depot
-With your 9th build a barracks(your 8th one should still be continueously making depots)
-Make a barracks with your ninth, while the 10th builds another barracks (in the shape of 1/4 ring)(.***.)
-Your 8th should be making a refinery while your 9th and 10th are making bunkers(make 2 more scv's of course for the refinery)
-After your 9th and 10th are done with the bunkers, fill the bunkers up with marines, and make 3 more bunkers
-You should make another scv, and make it build a factory
-Research Siege Mode, and make tanks(at least 6-or more)
-Make a bunch of turrets surrounding the perimeter of the Ring of Death(and around the base if u know the opponent is making air units)