You will also find impartial buildings dotted around maps. The Goblin Laboratory, for example, can sell a Goblin Shredder, which is great for TBC Classic Gold collecting huge amounts of timber in a quick moment. In addition they sell Goblin Zeppelins, which make fantastic scouts for recon. These neutral buildings are often guarded by creeps. If you happen to want something out of a neutral construction, but the levels of this creeps surrounding you're too high, try waiting for nightfall. Creeps sleep at nighttime, which means that you can rush in and rush out with no risk!
The early game in any game is all about speed and efficiency, as well as fielding the best units possible, as soon as possible. With various buildings dedicated to resources, tech trees, units, and defence, it's worth using a construct order in cheap Burning Crusade Classic Gold mind so you don't get overwhelmed.