Capturing WiFi Traffic using Wireshark

Professor Robert McMillen demonstrates capturing WiFi Traffic using Wireshark

[northwestrepair]

i dont have wireless option there and when i press capture, it does not capture anything and instead its asking me for remote SSH server

[davidb]

can I capture wifi traffic through my gateway if i am connected through ethernet? I am interested in capturing where my child is visiting through their phone and laptop on wifi.

[mr.boniato]

Thanks for the video, but most videos on how to use wireshark say it's great to do this and that and the other thing, but never give an example of any of those scenarios to show how it actually shows in Wireshark.

[vyomkt]

Can i catch packets from a network I'm not connected to ? Using monitor mode or something