Knowledge Check: Did you complete Tutorial 1: [Read and Annotate PDFs in Zotero](https://scribehow.com/shared/Read_and_Annotate_PDFs_in_Zotero__4J86A4JhQ4Wh5cE4gwaoVQ)? This guide picks up where it left off.
Tip: Diigo is a freemium tool. With the free plan, you can create 5 Outlines. [Learn more about each plan](https://www.diigo.com/premium/pricing_table_details).
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[Register for Diigo](https://www.diigo.com/sign-up?plan=free).
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Familiarize yourself with the Diigo dashboard: Once signed in, you default to My Library.
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In Diigo Library, click the "+" to the right of the screen
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Select the Acrobat icon to upload a PDF
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In the pop-up window, click the PDF icon again to select the PDF you just read from its saved location
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Double-click the PDF to "Open"
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Click the "Share to outliner" field
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Select the Outline you're using for this paper or project
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Click "Upload"
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Switch to Diigo Outliners
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Open the Outliner you're working with
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The newly-added PDF will be the first item on the outline
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If you click the title, a preview of the PDF will open on the left-hand menu
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To add your previous annotations, click to the right of the PDF title