Tighten the black antenna on the Snugr box. There is a small gold hex nut at the base of the antenna. Tighten it by hand, without forcing it, so that it stands upright.
Your Snugr box should ideally be located in the centre of your home, in a sufficiently unobstructed position to optimise radio wave propagation.
Plug in the power cord and RJ45 network cable, then connect the network cable to your modem to allow your box to communicate with the internet.