It's up to you to use the CrunchPrep course as you like and whichever way is comfortable to you.
If you don't have a plan in mind, then you can download a study plan after logging in to your account, and follow the plan every day.
If you're new to the GRE, then go through our intro lessons, take a full length practice test, and then review your performance to see your strengths and weaknesses.
You can use this test as a diagnostic tool, and make changes to your study plan accordingly so you can start focusing on the weak areas first.
If you have any questions, reach out to us via chat, or send an email to firstname.lastname@example.org