I was used to complain about evernote in why we can only have to levels of organization as "pile of notebooks > notebooks > notes" and today i descovered why.
THATS BECAUSE YOU SHOULD ORGANIZE THIS WAY →→→→→ ORGANIZE BY TAGS
I descovered this this week after using evernote since 2012 and this changed the way i organize my stuff. Please check those links.
https://michaelhyatt.com/evernote-tags/
https://medium.com/@thomashoneyman/using-evernote-the-right-way-ef61f530d1ad#.om2cofoe5
Thanks Michael and Thomas.