<p>Rennir - Telebears is the online system that students use to register for classes. You can read about it here [Tutorial</a> - Tele-BEARS - Office Of The Registrar](<a href=“http://registrar.berkeley.edu/current_students/tutor_telebears.html]Tutorial”>http://registrar.berkeley.edu/current_students/tutor_telebears.html)</p>
<p>Each semester, you are allocated two 24 hour timeslots for registering in classes. The first, for Phase I, is when you can sign up for the first 10.5 units of classes. Once your time comes up, you register and you can go back and adjust things through the rest of that phase. When Phase II begins, you have to wait until your second assigned timeslot, then you can add the rest of your units and as before you can go back and make changes for the rest of Phase II and afterwards. The two phases are intended to a more fair access to classes, otherwise someone with a very late telebears appointment might have found all the classes filled. </p>
<p>As far as getting into classes, it is easy to graduate on time. You might find a class filled in a given semester, maybe because you got a relatively late telebears slot then, but there are plenty of classes you need and may want to take. You just shuffle things around, take the class that is open, and try again the next semester for the one you missed. If in L&S, you have the seven breadths to take, there is the American Cultures class, each major has a list of pre-req courses and a list of options as classes to complete the major. There are also plenty of units left over after you take all the required courses for the major, which you will use to take classes that are interesting to you. Those could be taken any time, you just keep a mental (or written) list of the classes you might want to take. When registration comes up, you can definitely fill your 15 units average per semester that is needed to graduate in four years (eight semesters x 15 units = 120 unit min requirement for a degree). Any AP credit, any summer courses, any extra courses you take above 15 and you move ahead, buffering you further. Waitlisting in classes that are not hugely overbooked works well, with many getting into classes even though they appeared full at registration time. Extra sections open up, people drop to shift to another class, sometimes the prof even lets extra people in.</p>