How to Setup a Wireless Ubuntu Router

"This morning I was moving some stuff around and my router fell, smashing to pieces. Oh no! I need a wireless connection today. The router was a noisy (the fan drives you crazy) older (but faithful) boat anchor. I was in a pinch, with no time to buy a new one. So, I thought a quicker (and for me “fun”), fix would be to set up a temporary router on an old PC."