When do most instructors make their classes available and how do I do that?

Most instructors will make their classes available a few days before the class starts.

To make your Bb course available, go to: Control Panel > Customization > Properties >

Click "Yes" under “Set Availability” AND then "Submit." The course will not appear on the student's Blackboard course list unless it is available, so students looking for it will not see it unless it is set to Make Available.