Hi! For full access to courses you'll need to take a minute to create a new account for yourself on this web site. Each of the individual courses may also have a one-time "enrollment key",which you won't need until later. Here are the steps:-

Fill out the New Account form with your details.
After administrator approval An email will be immediately sent to your email address.Your account will be confirmed and you will be logged in and able to access courses for which you enrolled yourself.