Read the general HoloLens guide from Microsoft, unpack the device and follow the instructions.
After the device is set up, go to "Settings" / "Update & Security" and apply updates to the system. Do this several times, unless you see that the device is up-to-date:
Enable and access the Device Portal from your computer according to the instructions and then set the turn off time to 30 minutes using the Device Portal:
Find Vyzn app in Windows Store and install it as the final step.