Don't worry, failing the final exam doesn't mean starting over completely. Here's what happens.
You get one retake
If you don't pass the final exam on your first try you have one additional attempt to retake it. Before your retake we recommend going back through any lessons you felt uncertain about.
Remember the exam is open-book, so you can reference any lesson material during the exam itself.
If you don't pass after two attempts
If you don't pass after two attempts your account will be deactivated. You'll need to create a new account and restart the course from the beginning.