Here are simple steps to access your purchased courses:
Log into the site with the Account Tab
After entering your username (email) and password, scroll to the bottom of the My Account page.
Press the red button at the bottom of the page, called Course Login, to find your courses
You can access your courses on this page. Click on the course to begin, continue or complete the course. First time users will be asked to complete a page with account information before proceeding to courses.