FAQ

How do you look for supervisors before starting classes?

This video says almost everything about this topic.

To summarize, the first thing you need to do is find out your research area of interest. Computing science is a huge field and has many different branches. You can use this website as a starting point for the UofA. Once you have a vague idea of the research areas you're interested in, start looking up the professors working on that area. Chances are high that those professors will have public websites with a list of their recent publications, current research work, current students and most importantly, a section dedicated to potential students. If you manage to find that, definitely go through all the information, especially the instructions for potential students regarding how to contact them. If you would like to get a sense of what it would be like to work under a particular professor, a good way to get an idea is to contact their current students.

Side note: You'll probably have to read a few papers before reaching out to supervisors. This might help ease your initiation into academic literature.