Log in and select My Courses in the dropdown below the Online Courses button.
This will take you to a summary of the course(s) you’re enrolled in and links to any exams or certificates. You need to click on the name of the course to see the course materials. Most courses are made up of a number of lessons with an exam / test at the end. Generally, you need to complete each lesson in order and can’t progress until each is complete.
Often there are tasks or mini-tests in a lesson – if it won’t let you complete a lesson and move on, chances are you’ve missed a task and the system is waiting for you to complete it!