SHERMANVILLE, When you are browsing/exploring (looking at your documents) you will see the following categories "Name", "Size", "Type" and "Date Modified."
If there is an arrow pointing up by the name category, you are sorting your files by name from a-z or 1-10.
If the arrow is pointing down, you are sorting your files by name from z-a or 10-1.
To change the way it sorts just left-click in the name/arrow section and it will toggle from one to the other.
Incedentally, you can choose to sort them by file, size, type or date modified. It is your option. Hope this clarifies things.