I forgot my WPA password. Does anybody know how to retrive them?

Depends on your router. Go to your router account settings. You should be able to see, change or edit your password.

I would try to look up your router manual online if you don't have it. Often you can reset a router to "factory settings" which can reset the passwords for the router and for WPA, etc.

If you are using a 3rd party router, go to their customer support website for instructions or read its user manual.

If you are using one of Apple's please tell us which one.

If you still remember your router's "master password", there will be a screen somewhere in the menus. It will configure your wireless network.

If you have forgotten your master password, there is a "reset button". It is recessed, probably near the power connection. You will likely need a pointed thing (pen tip, etc). Makes it "factory original". Then you can set up a new master password and wireless network again.

I always fear the day I forget my router's "master password" and must start again from scratch.