Grindcraft is really fun and pixalated game. If you like Minecraft you will like this ALOT. Like most other idle clickers, Grindcraft starts you off with nothing. You need to start harvesting resources by clicking on a box in the grind portion of the screen. Something that is very different from other idle clickers is that you have to play for some time before any resource gathering is automated.
Open the lock's objects, wood, coobblestone, iron...
Explore as many places as you can, in order to get resources
Mouse and only your mouse, its a clicker heavy game. Don't kill your mouse from too many clicking, have fun.