If you've ever forgotten your WiFi password on your MacBook or need to connect a new device to your network, there are a couple of ways to find it. Here are some easy steps to help you retrieve your WiFi password on a MacBook:

1. Use Keychain Access: Head to Applications > Utilities > Keychain Access. Search for your WiFi network name, double click on it, check the 'Show Password' box, enter your system password, and your WiFi password will be displayed.
2. Use Terminal: Open Terminal and enter the command 'security find-generic-password -wa YourWiFiNetworkName'. You'll be prompted to enter your system password, and the WiFi password will be shown.
3. Router Settings: Log into your router's admin panel via a web browser. Navigate to the WiFi settings section, where you can view and change your WiFi password.

By following these simple steps, you'll be able to easily retrieve your WiFi password on your MacBook whenever needed.