When you interact with any object in the game make sure that plays a little sound, that sound means that you got an item on your inventory. There is a key in the first room to open the first door, then you will have to pass through the rocks, you will need to find a stick and stone to make a pickaxe, you can make a pickaxe with the working table, you will have to find a rusty key to open the door in order to access the working table room.