...
- select "Create an image PDF of the current chapter" and choose the chapter in the dropdown box, or
- select "Create an image PDF of pages ____ to ____" and enter the page numbers.
NOTE: the page numbers you use here should be those that appear in the upper right hand corner of your screen, NOT the printed page numbers inside the book!
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Want to mark a particular quote or portion of a book? Use your cursor to mark the section, then click on the Highlight button 
at the top of the page. The text will appear highlighted in yellow.
Highlighted sections will be listed under the NOTES tab on the right side of the viewer:
and under the title of the book in your Bookshelf:
Visit your highlights by clicking on them.
Annotating
You can also highlight and annotate sections of the text. To add your note to a section of the text, select it, then click the down-pointing triangle next to the highlight button 
and select one of the icons from the drop-down list htat shows a little pop-up window (the 4th, 5th and 6th items on the list).
The text will be highlighted and a pop-up window will appear for you to type in:
Type your note and click OK.
(Choosing from the drop-down triangle also allows you to highlight in different colors if you desire.)
Single User Books
A small percentage of the books in Ebrary can be only used by one person at a time. You'll recognize that you're using one because you'll see a
"Release this Title" button among the tools at the top of the book's page:
In order to be kind to others, please click on "Release this Title" when you're done using it.