Hey folks, I just started playing this and its okay.. Everything takes forever to build but as with most F2P games you can pay to speed them up.. I used all my gold in a few minutes because I'm impatient. But there's an easy way to get a good stream of gold coming in....
Click to open menu and scroll to the far right icon called supplies. This is basically a prize wheel. You get one free spin daily but usually spins cost one gold... But on the wheel are a few supply crates and a few different gold values.. ranging from one gold to four... I've been spinning for a while now and I've gone from my original 2 gold up to 25.. Every few times I spin I gain 2-4 gold.. I've also gained over 5,000 supplies..
I'm assuming you can keep going with this as much as you want, so long as you gain more gold than you spend.
Hope this helps you guys with this game... and remember its freemium.. the mium is latin for, not really.
EDIT: it seems the prizes on the wheel change each time you load up the game.. I just got a wheel with only one supply crate... everything else was gold