Accessing google con Arduino Ethernet, those 3 magic numbers

This brings up an interesting point, has anyone come across a web site that actually explains this kind of thing without a heck of a lot of jargon that will confuse the newbies to internet addressing? I haven't. They all seem to get into it way too far right off the bat and don't help the newcomer much.

If we run across one, we can point people to it to help them understand stuff like DHCP and home router addresses.