The goal for the workshop is to get your hands dirty in order to grasp the key concepts.
It's not to
The goal is to learn techniques, concepts, etc as bits of code that help you to build a bigger virtual reality project later on.
There are several exercises so that you can code and test right now! No, not in 5min once you just set up this or configure that, now.
That being said those exercises have limitations. Because of browser security for example you can not load texture or object file from another server. That means :
Despite that the online exercises are still useful as they are here to explain the concepts. It will not be enough to develop a full fledge webVR experience. For that you will need your own web server. This way you will host your textures, object, handle states, handle concurrent players with their interactions, etc. Having the perfect environment with a proper web server is not required to begin. Later on though it is recommended that you have your own server, either public facing or not, just privately within your WiFi network.
It is partly ready, so try at your own risk ;) Start with Mission 0
If you were a participant of this workshop check the Post Workshop Notes.