Wow, at the start is so hard to understand what's going on, but after the third die, you can't stop playing it. I go deeper into the game and strategic time :)
But still don't understand how energy works :D
Ah damn, I thought the description was clear enough >_< :
Billy uses energy
Crops use energy
Tiles give you more energy
Growing crops cost more energy to stay alive, but rewards more resources.
Thanks for hard trying tho ^^, I added the hint system in the end for people that want to understand the game better, dunno if that really helps haha.