I appreciate your feedback!
I actually updated it to include the section on the master key thanks to a recommendation I got in a comment on this post. I've got a whole article dedicated to the keys coming soon, so I would love to get your feedback on that as well when it goes up.
If you do get to share this with new users, I hope you'll let me know what they think of it. I want it to be the best experience possible for them.
I'll definitely let you know, I have a friend who is interested and eager to sign up, I just haven't heard from him in a few days. Once he is on his way, I'll get some feedback from him about the BgtS.