Setting up Spotify, Tidal, Qobuz etc on the Touch?

What is the process to set up my Touch to run a streaming service like Spotify, Qobuz or Tidal?
(Is there perhaps already a thread on this?)

Can I receiver higher quality sound -- worth it to pay for a premium service upgrade?

I plan to attach the Touch to a high quality DAC into my all tube audio system, def worth the quality.

Currently running LMS 8 on MacBook Pro, 16 gig I7.
(Possibly not relevant if the Touch goes directly to the streaming service?)

Thank you.
Art