@mark_ehm At what stage of onboarding are you? Do you have Cloudron installed and setup already? If not, our demo is a good place to start understanding what the product is/does. https://my.demo.cloudron.io/ (username and password is both cloudron). You would install something like Bookstack. You can login to bookstack with the same credentials (cloudron). You can add users in Cloudron dashboard and those users will get access to bookstack as well.
If you already have Cloudron setup and working, then just ignore what I said and follow @jdaviescoates said