There are several ways to start a game, and it’s not possible to say, what’s the best way. Generally we recommend you start the first game together. You can show the students how to login, and remind them to make sure their game devices allow location sharing and access to camera. You can also go through the most important rules of the game, if necessary.
To start the game smoothly, you can make an introductory exercise which you will all do together in the same space (group selfie or short video to test the devices are working properly).