Like to learn how to use My Volumio

Hello to All I am from Ashburtron New Zealand and I have setup nanosound one and it’s is great and I am retired and would like to ask how this My Volumio work, probably a manual how to, and how to get music set up in My Volumio I have not to may friends in here any way so I wont have link up to My volumio list, I would like to join My Volumio superstar but like to now how to use it first.

Thank you for any help with this