First .. go to heygo.com/susanna
It would be easier for you (and nicer for me) if you click the ‘Follow‘ button. In any case, if you follow or not, the site will ask you to register. It will ask for a name and an email address. Now you can see the current tours I’m running and you can book by clicking the ‘Book‘ button. You will be reminded of your booking about one hour before your tour starts.