Beneath the path, are a series of shortcuts that can take you to the root folder, HTML document root, or the EWE root.
Pressing the "Upload" button will allow a file to be uploaded to the current folder.
The bottom box shows the files in the current folder. The list can be sorted by any of the four columns by clicking on that column's heading. For non-executable files (such as PHP), the file name will be hot and clicking on that file will either download it.