You only need a psych handbook (custom courseware - $30 at titles) for this course to take notes on, no textbook. Make sure you wanna take this course before you buy that though, can't return it.
And tutorials would have been cancelled last week, so Monday is the first day of psych tutorials for first years, making this the first week. As for the first online lecture, they do expect you to watch it (or at least they did last year). But no worries if you don't get to it, the first tutorial will just be basic intro to the course and show you how to watch the lectures. It was a cool course though, Good Luck!