The area on the left side of the eTextbook is where your notes, bookmarks, highlights are stored. To collapse the pane, click on the orange triangle at the far left. Click the orange triangle again to expand the pane.
The Notes section may contain two different types of notes. My Notes are notes that you have created. Shared notes are notes that have been shared with you by either the publisher or your instructor. Shared notes may contain links to external content or to another page in the book. Clicking on a link from a shared note will take you directly to the link location (external links will be opened in a new tab) while clicking on any of the other text from the shared note will take you to the page of the eTextbook containing the note and open the note.
The Bookmarks section lists all of the bookmarks that you have made in your eTextbook. Each bookmark is listed with the page number and the date it was created. To go to a bookmarked page, click on that row in your bookmarks list.
The Highlights section lists all of the highlights you have made. Each highlight is listed by page number and shows a selection of the characters of your highlighted text. If there is a note associated with the highlight, a colored square corresponding to the color of the highlight appears next to the page number of the highlight. To navigate to the page with the highlight, click on the page number of the highlight.