Hello,
1 & 2. No, topics and sections can only be created/edited from the back-end.
3. That's correct. I have disabled questions and I'm using the topics as articles.
4. No, actually each Joomla Extension in the documentation is a separate Section, with its own unique Section menu item.
(screenshot1) So, in the top navigation, Joomla Extensions is a Sections menu item (selected at Section > Navigation > Sections menu item) and Minitek FAQ Book is the current section.
In the left navigation, these are topics of the current section.
And the Topic content is indeed created in the "Edit Topic" general tab.
You can hide the "Browse Topics" link at Section > Navigation > Browse Topics link.
5. No, unfortunately the Notifications component does not integrate with FAQ Book, but it's in my plans.
6. No, there is no print functionality for the front-end.