It looks a little different in different browsers.
If you already have some PDFs saved from past research, just drag and drop them from a desktop folder nto your Zotero library. Zotero will automatically search online and match the PDFs with citations if possible.
There may be times when you need to add an item to your library by hand. If so, use the green "plus" icon and choose the type of item from the dropdown list. A window will open with the appropriate fields to complete for that item type.
Colgate University Libraries | 13 Oak Drive, Hamilton, NY 13346 | 315-228-7300