You can access the additional courses by changing your goal:

• If you use the WordDive mobile app, you can change your goal by tapping on the big picture icon on top of the course list. There is also a button on the very bottom of the app that will take you to the goal settings.
• If you use a computer, you can change your goal on the Exercise page by clicking the big, round, icon on top of the course list. Choose “Change your goal” and then select ''Voluntary courses''.

Additional courses are voluntary. You can use them if you have time and energy. Remember to make sure you complete 100% of the actual prep course package so the grade guarantee will stay valid.