So, i've heard that the first backup should be via Ethernet. So i've set my TC to connect via Ethernet(from the airport utility). But in the future i want all my backups to be wirelessly. What should i do then? Go to airport utility and change my settings from ethernet to add my time capsule in my current network? If yes then time capsule will create a network that will be transmitted everywhere nearby. How will i be able to protect my time capsule network with a password so as no one can connect to it(no one but me of course!)? I don't know if this interests you but i want to be connected to my router's network and also have another "locked" network from time capsule.