Stop Making These 5 Common Starcraft 2 Mistakes
Keep building workers. You have to expand once you get around 20 workers per base. Workers ultimately mean money that you will need to oil your operation. Once you determine that you might have a lot of workers expand at another mineral patch and send about half of your workers there while meanwhile building more workers from each of the two command centers. Either base will support at least two workers for each mineral patch and three more for every Vespene gas geyser.
Always watch out for your opponent. In starcraft 2 it will be easier for you to come up with counter- strategies if you are aware of what your opponent is doing. When you are at least a minute in the game, send out a SCV to keep watch for the opponent. Once in a while make some surveillance checks and avoid overlords and build observers.
Spend your money. Money lying in the bank not invested will not help you in winning the game. If you have at least 300 more minerals at your disposal then you aren't spending enough.
Build more first tier combat units. Starcraft 2 beginners mostly lose to the guy who concentrates on building a few cheap attack units and attacks earlier because they get caught up in building their tech tree quickly so as to get the flashy units. They forget that they need to earn the units with zerglings by staying on long enough and not losing.
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