https://ctat.roanestate.edu/bookmarking-a-pdf/
Bookmarking a Page
Using the Bookmark Panel
1. Open the PDF document.
2. On the left side of the workspace, there is an arrow in the middle of the left margin. Click the arrow to expand a navigation panel. There are three icons in this panel: Save, Pages and Bookmark. Be sure the Bookmark Panel icon is chosen.
3. Go to the page in your PDF you want to bookmark and click on it.
4. Click on the Add Bookmark icon. A new Bookmark will appear in the panel. Type in a name for your bookmark.
5. In the upper right corner of the Bookmark Panel, click the Save icon.
6. You have created a Bookmark! Repeat the process for additional pages and bookmarks.
Bookmarking Specific Content
Using Right Click and Pages Panel
1. Open the PDF document.
2. On the left side of the workspace, there is an arrow in the middle of the left margin.the arrow to expand the left margin navigation. Be sure the Pages Panel icon is chosen.
3. Click on the page (in the panel) your want to bookmark content in and click on it.
4. With the Select Tool chosen, click and hold at the beginning and drag your mouse over the content to select it. Your selection will appear highlighted.
5. Right Click your mouse, a small menu will appear, and choose Add Bookmark. A bookmark will be created in the Bookmark Panel with an excerpt of the content used as the bookmark name.
6. Click the Save icon to save your work.
Download a PDF of this tutorial Bookmarking a PDF (opens in a download window).