Organizing local media [solved]

I am in a process of setting up mopidy on ubuntu with local media.
Haven’t there yet but how does mopidy “mopidy local scan” works.
How should i organize my media, can i add any metadata so mopidy can take advantage of it (artists,albums,album picture) ?
Couldn’t find any information on a matter.
Any tips?
Or this is a common knowledge i don’t know of :smi

edit: silly me, common knowledge indeed.
edit: no post delete button?