Units and Heroes are for combat
Units and Heroes are for Wow gold classic combat, Workers are accountable for collecting resources and constructing buildings. The two tools you are going to be sending your employees to collect are golden, gathered from gold mines, and timber, gathered from trees.
Getting the most from your workers is key to financing a successful game, and that means gathering gold and lumber as economically as you can. Every faction starts with five workers. Right off the bat, you'll want three on gold, one on timber, and one for building. You will want to grow that number to the maximum of five percent mine as soon as possible, and cheap classic gold at least four on lumber.