Throughout the course development process, it is important to validate the design you've created--through the eyes of your students. Blackboard allows instructors to switch to a student preview at any time, to accomplish this goal.
If possible, try viewing the course as a student via different web browsers, and click links and media to be sure they function as you envision.
To enter student preview mode, select the Enter Student Preview function at the top-right corner of your course pages.
Student preview creates a student account, called the preview user account, logs you in as that student and enrolls you in the current course. When you enter student preview mode, the student preview bar appears at the top of each page. The bar displays the text "Student Preview mode is ON" and has Settings and Exit Preview functions.