That's a lot of content in one video. I might look at building my own lightning network node. I'm not that technical but I think it would be worth giving it go, as the learning process is good.
I tried mining Ravencoin a while ago and wasn't impressed. I only have my PC with the one GPU, so I don't have much hash power but it took me a long time to get a fraction of 1 coin, and that's never going to be worth much with such a huge supply. With the price of electricity in the UK, it just isn't worth it. Wish I had bought some before the pump but I would expect a lot of profit taking now, so maybe I'll buy when there's a nice dip.