Please register in advance - if you cannot due to extenuating circumstances, then you may register when you come to attend class. If you are unsure about a class, you are welcome to try it out before registering.
Register on-line (preferred method):
Download the course registration form, complete it, and submit it to the IIT's office, with payment: Mon. - Fri., during school hours (or mail it in). Outside of these hours, or at any time that no-one is available in the office, please place the completed form with payment in an envelope, and drop it off in our mailbox. (Registration forms are also available at the IIT.)