Ebook Central offers a number of options for annotating e-books, including highlights and notes. Any annotations you make are automatically saved and can be accessed at any time.
To add hightlights or notes:
With your curser, select the text you want to annotate.
A menu will appear with options to copy text, add highlights, or add a note.
To see notes or highlights you have made, click the "Annotations" icon, located on the left side of the screen. Clicking on a note or highlight will bring you to that page. Additionally, you can see your notes or highlights by clicking on the Bookshelf option on the top of the screen.