
A Harvester leaves the Refinery and automatically begins to gather resources. It is efficient to build many Refineries - but do not build too many too soon, otherwise you will have fewer resources available to construct defenses for the base. Experienced Strategists calculate the ideal balance of growth and maintenance. The next step for us will be the strengthening of the base defense.
PRACTICE: Start by constructing a Barracks facility

. Select it in the Buildings section. When it is ready, move it on the field and double-tap to place it. Remember to leave space near the gate so units can get out!