Open the AirPods case lid
Press and hold the setup button on the back of the case until the light flashes white
On your Mac, click the Apple menu
Select System Settings or System Preferences
Click Bluetooth
Turn Bluetooth on if it is off
Wait for your AirPods to appear in the device list
Click Connect next to your AirPods
Follow any on-screen prompts if they appear
Select your AirPods as the sound output if needed