It's 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 or send us an email to firstname.lastname@example.org and one of the team will get back to you :-)
Also, asking our exclusive member's only Facebook Community is also a great way to get advice and tips from the other GMM members. Hearing what helped them with their own playing can be extremely useful to your own playing.
All the best!