Reply to newbie question re: browsing

just picked up an s4 and cannot figure out how to browse through
a) folders added through File Mgmt> Music Folders
b) freedom to search freely on the left exploration tree

i can scroll through the 10 fav folders that's above the songlist, and playlists.

fiddled with the pioneer t-1 and browsing was easy peasy after you added a folder in file mgmt.

read that maschine users have universal browsing issues too.
couldn't find any tree browsing issues in this section of the community or through google/youtube.


I AM TOTALLY SURE I JUST MISSED SOMETHING.
thanks in advance