On CR 1 you can bookmark Documents, Videos and Questions. It will help you to go to that document or video quickly.
While reading a document or watching a video or reviewing a question, you will see a link . Click on that link, click new folder. Create a folder and select it. For example: You can create a bookmark folder, Videos, and keep bookmarks of videos in it.
For viewing the bookmarks, click on the bookmark tab. Select the folder and see the saved bookmarks.
Happy Learning !