Okay, so I followed the instructions of port forward to the T on how to get the ip addresses and port forward. I have an ip address set up for the server, and when I check the port it says "NOT OPEN" and I've tried lowering my firewall, trying to find the ip AGAIN and noting still works. I've sent the ip I made under the server to my friend, and I've sent my external ip.
I think I'm supposed to be able to click the option that says "Open to LAN" but it's greyed out.