If you require some help with a lesson, you can submit a support request.
It is highly recommended that first, you watch through the lesson a couple of times to make sure you haven't just missed something in the lesson.
And remember that if you have skipped ahead of the order in the member's area, some lessons will not make any sense at all. You must go through the lessons from the beginning as explained in the lesson guide on the welcome page after logging in.
If you are still unsure of something and need it explained from a different angle, you can submit a new support request here.