Sure-forget your old wifi network-using a straightened paperclip, look for small hole at rear of airport-stick paper clip in there until light on front turns yellow and starts blinking. You may have to pull the power cord out from airport for 30 seconds then plug it back in, then try straightened paperclip again. Use airport utility to find wifi capable device, then click on it once you have found it, set it up, create network, apply changes, let airport reboot. Light on front should be green. Ethernet cable should go from modem/router to 1st Ethernet port on airport( the one that looks like a circle). If using iPhone, airport should appear under wifi networks, and then you can setup using iPhone only as needed( I have airport utility for iPhone-free-may be included as part of iOS-otherwise get from App Store). I made 5 ghz network, but you can choose 2.4( more crowded though) and channel and set wpa2 password for wifi sign in. Then save changes, let airport reboot, look for green steady light on front to show all is well, then under network choose wifi, then your new network, which should show up, then sign in and that’s it- u should be done
Whew!
Hope this helps u
John B