Alongside each module, you may want your clients to have a guidebook that they can reference, which provides thought provoking questions and accountability. What's the difference between worksheets and a workbook?
Worksheets are individual files designed for each module. They are best used alongside the course material and will help guide your clients through the learning process.
A workbook is a resource that is designed for your course AND can be used outside of your course. So, say a prospective client has a fair amount of experience in what they're teaching but they still want support - they'd buy your workbook as a standalone product. Alternatively, clients who have signed up for your course can purchase the workbook as an additional resource to really help them grow faster.