If you already have a PDF or other uploadable file copy of an article or other publication you want to add to a list, look under "Add" and click the "Upload files" option. Then you can drag and drop a file, or browse to find a file to upload. 

The system will automatically detect any bibliographic information available, then you can edit and add the rest as needed. Select to indicate the type of file (e.g. "Article), and edit the title if needed. 

If you own the copyright to a publication, click to indicate "This file was authored by me and does not require copyright clearance." Otherwise, leave the "No declaration" option selected, and the library will address any copyright issues. 

Click "Next" for the screen where you can select the section of the list to add it to, edit the bibliographic information and add notes for students, due dates, tags for searching, etc. Then click to "Add" to your reading list.