<p>Nah, just go on telebears between 7pm and 12 am and you should be able to make changes to your classes. Since you probably haven’t had phase II yet, you can only have a maximum of 10 units, so if you want to add a class that will put you over, you gotta drop one first. And be careful because if you drop a class that’s full and you want back in, you’ll have to get on a waiting list.</p>
<p>As for CS61A, I don’t think there are any prerequisites although some people take CS3. As such, they will probably start from scratch, but just go a lot faster than those with no programming experience are used to. I probably wouldn’t recommend taking it first semester with no prior programming experience (if you want to do well).</p>