That's absolutely fair, I didn't manage to add a tutorial before deadline :(
In case you would be willing to give it another go, I described some basics on the game page, but in general it all comes down to ordering units around:
* at the start you left-click the initial unit to select it and right-click the building to send the unit into it. That will start spawning new units.
* then you build a wood cutter like you did, and send some units to that building to produce wood. That should get you started.
* if you select a building and then right-click somewhere, you'll send units out of that building.
* shift+right-click sends only half of the selected unit somewhere.
Anyway, thanks for checking it out!