Hi and welcome to OLW.
You can't upload an entire folder, but you can upload multiple files. You would have to go to your folders, open them up and do Multifile upload. It may be painful the first time but afterwards you should be ready.
Regarding edit: all the file you upload can be edited at any time using you Office client. Just go to your file and click edit. To print them, you would need to use your Office client as we don't support printing directly from the web.
Hope this helps!