No need to apologize.
While not knowing what e-course plugin you are using, maybe it is possible to make the registration page “private”?
If not, you could create a Restriction and only allow administrators to access it.
For the members page, create a Restriction for it and then only allow moderators to access it.
I’ll write this up in a usage guide eventually:
How to create a restriction
Go to Users > Restrictions > Add New
On this screen, create a new Condition Group and add some content to it from the box to the left. Read more about Condition Groups under the “Help” tab.
Now, to the right, select what User Role you want to have exclusive access to this content – i.e. what User Role you want to restrict it to.
For unauthorized users, you can choose whether to redirect to another page or to show the content from another page along with a teaser/excerpt from the restricted content.
Finally, give your new restriction a descriptive title and save it.