To Connect a Qstick to Wifi, you will need a keyboard and mouse connected.
Once Connected, you will find your Qstick at the Qless login page or, at a "Server not found" page , to get to the Desktop, hit (Windows Key + D)
From the Desktop at the Bottom right, you will see an Icon showing Disconnected cables, click it,
Upon clicking it you will be given a list of all publicly available SSID's you can connect to, if you need more advanced network setup, click on network settings and modify them there (making the IP address static, putting in custom Gateways etc.)
Once your are Connected, relaunch Firefox and you should be good to go!