I can't follow the stickied tutorial because I have no idea how to get my LAN IP Address.
That's in the tutorial too, when you do ipconfig, it's in there.
What about on the left side, where it says 'Ethernet'?You'll need to do this toohttp://osxdaily.com/2010/01/26/how-to-set-a-manual-ip-address-in-mac-os-x/