One of Zotero's most convenient features is its ability to find bibliographic information on the database records and web pages you visit. Zotero can often detect the type of source you are viewing, and you can add it to your Zotero library with one click.
Other Ways to Add Sources
In addition to importing sources from a browser, you can add them to Zotero in a number of ways:
Enter an identifying number
Open Zotero and look for the toolbar above the central column
Click the magic wand (Add Item by Identifier)
Enter the ISBN, DOI, or PMID and Zotero will look up the number and generate a record
Enter items manually
Click the plus sign (New item)
Choose an item type
Enter the item information in the Info tab
Drag in PDFs
Drag a PDF from your computer to the center column (the list of items in your library)
If the file contains metadata that Zotero can read, it will create an item record and attach your PDF to it
If Zotero cannot read any metadata, right-click the item and "Create Parent Item" to enter information manually.
Open Zotero. In your browser, click the icon to add an item or items to your Zotero library. Zotero will create records with bibliographic information about each item. If the full text is available (e.g., a PDF of a journal article), Zotero automatically imports a copy of it, too.