When you setup any device for the first time it is already set with default settings for easy login. The default credentials are mentioned in the manual you receive with the router and also at the back of the router on a sticker. The default Netgear router password is admin or the word password.

How to change default password?

 Open a web browser and enter the default IP address of the password.
 Then, enter the default login credentials in the given boxes.
 Click enter and you will be navigated to settings.
 Click on Wi-Fi network and select change password option.
 Type the default password. Then, create and enter the new password twice.
 Click ok to apply the changes.