Have them in front of you when you read through the following information, particularly the frequently asked questions. I will have some more instructions for you once you have read this information. The maximum number of courses you may take is 5 per term. Taking five courses is the equivalent of working at a fairly demanding full-time job. You should keep this in mind when planning the rest of your activities.
Some students take fewer courses per term, which is quite acceptable.
With one exception, sign up for the degree which you think is the most likely one you will want to complete. The exception is the four year specialist degree in the Faculty of Science. You must start off in the three year degree, and obtain permission from the relevant department to do the four year specialist option. It's quite simple. There is a space on the Change of Registration Form for indicating this.