How to coil a cable.
This is the over-under method, popular among recording engineers and roadies (the demonstrator in the video calls it a “roadie wrap”) because, they say, it does not damage the cable like some other methods can, and because you can simply throw the coil to uncoil it, and it will come out straight.
As I found while looking for the best video to embed here, some of them have much disdain for those who don’t coil their cables properly.
You will need some method of keeping the cable coiled afterward. Velcro strips or plastic cable ties are two commonly-available ways of doing this.