If you already have PDFs saved on your computer, you do not need to add them all manually to Zotero.
If you install a few added plug-ins you can allow Zotero to search the full text of every PDF you save using it.
You can use Zotero to create an Annotated APA or Chicago Bibliography.
APA: Download the style "American Psychological Association 6th edition (annotated bibliography with abstract)."
Chicago: Download the style "Chicago Manual of Style 16th edition (note, annotated bibliography)."
Step 2: Open your Zotero library and select the item that you want to annotate. In the "Info" tab on the right-hand pane, write the annotation in the "Extra" field. Repeat this step for each item that you want to include in the annotated bibliography.
Step 3: Open your word processing document and follow the standard process for inserting a citation into your document (see the directions above). When prompted to choose your citation style, select the Annotated Chicago or APA style that you just downloaded.
Have the book in front of you and want to add it to your Zotero library without having to search for a citation?
If you have a book's ISBN, an online article's DOI or PMID number, just click the magic wand button: "Add item by identifier." Type in the book or article's number, and Zotero will automatically download its information and save it to your library.
If you do not see the style you want listed, you will need to click on Cancel and go into Zotero's Preferences. Under Cite select Styles. Click on Get additional Styles...
Find the style you want and click on the title. Click on Install.
This style will now be listed when you go back into Word to install the first citation.