You could try the other Online Filing documentation area in the Download Centre. Alternatively, you can contact EPO user support, which is open Monday to Friday, 08.00-18.00 hrs CET, on +31 (0)70 340 45 00 or at support@epo.org.
No, there is no e-learning module available at the moment. There is, however, a tutorial containing instructions on how to use the software. You will find it in the Download Centre under "Documentation".
Whether you are in the File Manager or in a form, simply go to Help -> Online Filing Help.