hi guys, could I find out who my professor is before the first day of class?

Doesn't it say which professor teaches each class and section on the master timetable? Well, except for certain classes where the prof is still TBA.

Yup, just go here and type in the course code, e.g. 3M03, and select the course, then look at your timetable to see which core you have and then you'll know the prof!

P.S. I would suggest just putting in your course code and leaving everything else default, usually the return list isn't that long and you see your course right away, this just saves time if you are looking up quite a few....