is this a different wifi network or does it just increase the signal strength?
Will you be able to hook up your devises to the current wifi network or will you have to select the wifi booster as the wifi network? Will this create another wifi network?
Will it create a new WiFi network? Yes and no. It will piggy back off of your current network. However yes, because when you go to look for the network, it will be its own option. Example... if your networks name is "ABC123", once this device is set up, it will show another network you can connect to labeled "ABC123 - EXT". And yes, you will need to connect your devices directly to the extended network for it to work. Now... I have a Chromecast that is connected to this device directly, however, my phone is always connected to my router. It still controls my Chomecast that's connected to the extender.