Click "Upload Files" button shown.

Upload Files:
Provide Folder Name and click "Create".

Upload Files:
Select Created Folder to Upload files.

Manage Folders:
You can Manage Folders by using "Manage Folders" button.

Upload Files:
Select your file (doc, docx, pdf, jpg, html, htm, txt) from your location and "Upload".

Upload Files:
You also have an option to rename and delete your uploaded files.