General Game:
To play the game you have to first create a character, then after you create your character choose it then on the worlds menu create a world, once the world is done generating your ready to start!
You need to collect resources and fight off monster with the tools available in your inventory when you spawn in.
Once you get strong enough then you can challenge a boss to get its amazing loot!
The more bosses you kill the more you progress trough the game, with the final boss being called "moonlord" after defeating him you have finished the game!
Money:
The currency in the game take the form of coins going up from Bronze, Silver, Gold and finally Platinum!
You can upgrade your coins by getting 100 of them and going to the crafting menu to upgrade it once you reach platinum you cant upgrade your coins anymore.
Once you get a lot of money you can buy items from the friendly npcs!
To get coins there are different ways such as:
-Killing mobs
-Finding loot around the map
-Selling items to friendly npcs
-Fishing
Friendly NPC:
Friendly NPC are npcs that help you progress trough the game by giving you tips and tricks as well as letting you buy items from them!
To get a friendly npc to move into the world you have to create houses for the npcs to live in.