I am badass with orc, I can probably help you with that.
I usually do Grubby's order, which is pretty efficient.
- 4 Peon on Gold, 1 builds altar.
- Build 2 peons at Great Hall, first one done builds Burrow.
- Fill the mine, then at 180 gold make barracks, send peons that finish burrow and altar on wood.
- Get hero at altar, one grunt from Barracks, build 2nd burrow if you can
(Along the way getting peons of course) - At 180 Wood, tech to stronghold, then get a War mill and Voodoo Lounge while constructing.
You should probably have 5-8 peons on wood by this point. Its a good tech order.
Afterwards, you do as you please. But you should try to harass and/or pin enemy down with offense.
Orc is a race that needs to get the better units before they do.