If you're looking to get into YouTube, start with where it originates, on PC. It's by far easier to set up, and you have a lot more variety of games to choose from on PC, which could help your channel grow.
Make sure you buy a computer that can handle all of the games you want to record + a little more, since recording will take many resources from your computer. OBS (Open Broadcaster Software) is pretty much the best recording/streaming software available, and it uses very little resources from your PC compared to other software.
I can't say that I've personally tried recording on the two consoles, but recording on PC is incredibly easy to get into. It also helps that nearly all editing happens on PC, and I'm certain that you won't...