Down the bottom of the left hand side there are some short cut buttons (i.e. there is one that takes you to mail, one that takes you to calendar, etc.). There should be a shortcut button down there for folder view. If not, there should be a button to show hidden shortcuts that will take you to folder view.
I hope this makes sense. I can't go through the process step by step cause I don't have outlook in front of me atm haha