Now go and subscribe to NWRTV.
Unexpectedly, though unsurprisingly, a YouTube application is now available in the eShop for the Nintendo Switch. The free download will install YouTube on TV, allowing you to watch videos on the go. The option to sign-in to access your subscription list is available but requires a separate device in order to activate.
Typing NWRTV into the search will bring up the most appropriate channel to register as your first subscription.