Hello! This is an incredibly broad question. You might want to check out some outline resources/tutorials. Here's a good one directly from Apple:
https://www.apple.com/support/music/#mn_p
If you live near an Apple Store, they host hour long workshops that are free of charge. One is actually called "Discover Apple Music" and I think it would be perfect for you. Here's a link:
Workshops - Apple Store - Apple
Good luck!