Why can't I see my Blackboard courses?

The most common reasons students can't see their courses are

they are not registered for the course through their school's normal registration process
they are taking a course at a sister school, rather than their home school and the sister school has not yet sent over the enrollment information (BMC students taking HC courses, and HC students taking BMC courses often have delays in their Blackboard enrollments
the professor is not using Blackboard for that course
the professor has not yet opened the site to student access

If you are registered and know the professor is using Blackboard, check with the professor to make sure he or she has made the course available.