Word of advice to people needing to enrol over next few nights.. be on the site ready right on the opening time because they go in a flash. I was not even 10 seconds after my opening time and didn't get the tutorial I wanted.
It was crazy! I literally sat at my laptop for ages and refreshed the page right after it hit the time that it opened and missed out on one of them. I got all my other first choices though! One of my classes ended up clashing with another so I just emailed the subject coordinator and he got me into the first choice that I missed out on anyway