As much as Stefan would love to provide 1-on-1 coaching or support for the members of Mastering Book Publishing, it's impossible for him to provide that for everyone. However, Mastering Book Publishing is a very thorough, step-by-step course that covers almost everything you'll want to know about publishing books on Amazon.
If you're stuck or need additional help, it's recommended to join Mastering Book Marketing, which contains a Facebook group community of other members that support one another.