Oh dear, I'm just rambling in your asks, sorry! But about gold: if you want to travel to Nether (one of the three dimensions; there's Overworld, where you are now, Nether, where you can go by crafting a portal, and the End, where you can go by finding the portal and beat the main boss aka the Ender Dragon) you want to have a piece of golden armor, as there are creatures that will attack you if you don't have any golden armor on you; you can also trade with them using gold
Very interesting where do I find this dragon?
(I haven’t killed a single creeper yet I’m overconfident enough to want to fight a dragon)