There are two types of "enrollment" in this course. The first and official one is through TeleBears. You'll have to add the class using the course entry code I gave out. You must also complete the second one, which is for the "BlackBoard" website (instructions below). You have to create an account in "Blackboard" in this course (the "main course website"). To get an account, do the following:

Go to "blackboard.berkeley.edu" in your browser
click "create account"
fill in the information (red-starred items are all you need do) and write it down in a safe place ,then "submit"
click the "Courses" tab in upper left and follow the links: "Letters & Science", "Astronomy"
In the list of Astro courses, find the right one
click the button at left: "Enroll"
you should end up at the "Annoucements" screen
If you haven't already seen it (or started there), click "Course Info" to find the syllabus and other information.

Let me know if you have any problems with this procedure by email to
basri@astro.berkeley.edu . Prof. Basri