This is what works for me - can't comment on whether it'd be any good for others but .... I store all my tunes on my home server (has RAID-like redundancy and backup so I don't lose anything).
Basic layout is:
Tunes
- Genre
- Quality of file
- Date stamped folder, description if needed
Eg - today I added some tracks to:
\\media\tunes\trance\FLAC\2016-11-19
I'm ex-vinyl and have difficulty remembering and finding tracks without having something physical to flip through. This way, I can keep track of tunes based on what genre they are and when they were added to the collection.