I have a R6330 Router with nothing on the sticker. How do I use it?

In case this is a brand new router, return it for a warranty exchange to the point of sales (eshop, distributor, ...) as deploying such a device isn't possible for the average user, clearly a faultily product.

In any case, you can connect a computer with an Ethernet port to the a router LAN port and How do I locate my router’s IP address? 

• Open a Web browser, and enter http://www.routerlogin.net (or figure out the computer LAN config e.g. by using the command shell and enter ipconfig ... it's the default gateway address)
• A login window opens
• Enter the router user name and password.

The user name is admin. The default password is password. The user name and password are case-sensitive.

Wireless name and default config can be accessed from the browser then.

Remains the problem with the serial number. Not sure if the R6330 does present the serial number on the Web UI.

Most easy would be to check the color wrap box the router was delivered. Alternate you can find the router MAC address calling arp -a from the shell or command line after you managed the login from the Web browser  It will show you a list with the LAN IP, the related physical address (aka. MAC address) and worst case challenge Netgear support for the serial number matching to this MAC address by sending an email to customer.support@netgear.com