Always be beating up the monsters and then ya research.
Fail to beat a guardian? As Phil Swift might say, "That's a lot of damage!" Be sure to destroy fear as soon as you possibly can, or it might clog up your deck!
Don't spend your idols willy-nilly- that would be silly! If you only spend idols when absolutely necessary, you can keep the points on your camp board. That said, sometimes spending an idol can gain you the resources necessary to chain several actions, in which case not spending the idol would be silly.
Don't play all the cards in your hand right away, there is no rush.
You have many turns in a round (5 rounds). So get the good stuff before your opponents get it. (get it while it's hot).
Oh and get the coin assistant.