New to all this. Just bought an iPad Mini 7 without cellular. I have no other Apple devices. I'd like to learn to use FaceTime. How do I go about setting it up ? I think I got through the first few steps as I signed in with my Apple ID (email). So it seems ready to go (?). As I mentioned I don't have cellular so I'll have to use WIFI/email if that is possible/correct. Where do I go from here ? How do I FaceTime someone, and how do they FT me ?