Got a new camera to do POV videos with and I have a lot to learn!
Here is the first one - starting a four strand round braid with one color and no core.
Don't despair if you drop your strands and everything looks confusing (I usually keep a bull clip handy to keep the loose strands in place if I have to take a break):
And here is the same thing, but with a core. I use artificial sinew for the core. It is waxed and therefor sticky, so the braiding sticks to it and keeps snug all the time.
I know it makes for a lot of repetition, but that is a good thing. All aspect in braiding should be practiced over and over and over until you can do it while watching TV.
So, here - starting the same four strand braid, but using two colors.
The first method will give you a spiral pattern around the braid:
And if you start it this way, you will end up with a diamond pattern running up the length of the braided cord: