Originally Posted By: Waterman981
Hit the "Plus" button on the top. Select gold, and select which one you want to activate. There is also descriptions of everything under Advantages.

I was reticent to use the free trial for some reason. I guess maybe I thought that they would want some financial info. They don't. Just click on the Plus Trial link and get 35 free gold, which you can then use to increase resource production (amongst a few other things). I can't see any reason not to do it.
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Bitt Faulk