How do I become a member of the hagetisse site (so I can see the vademecum and hidden content)?
You can become a basic member for free or a paid member via the Become a member page. Follow the instructions and go through the steps to see more of the vademecum. I hope to see you on the other side of the hedge soon!
Do you want to get an idea of what you can expect from the vademecum? Then read the manual. There are several screenshots in it, so you can see what is still hidden.