This site provides free courses in a number of areas. All of the original material on the site is released under a Creative Commons Attribution 3.0 New Zealand license. Under this license you are free to re-use and remix the content as you see fit - even for commercial use - as long as you acknowledge Richard Jones as the copyright owner and this site as the origin.
Note for existing users: due to a high volume of spam an email confirmation system has been introduced that requires administrator authorisation via email. Your account may have been suspended. Please contact the administrator or register for a new account. Thanks.