You should really consider a lesson from children and train on your own to have an open up intellect, free of pre-conceptions and inhibitions about both spirits and the unseen. With the API demos mounted (that was the -a solution), you can open https:/// in a browser (where by is the hostname you specified in the `bbb-set up.sh` command), enter your name, and simply click 'Join' to join 'Demo Meeting'.