I learned from the book "Harley Hhan's Guide to Unix and Linux".
In chapter 3 of "The Unix Connection", it instruct to establish a local area network.
You can see this illustrated in Figure 3-6. In Figure 3-6, the network connections between the PC and the three Unix hosts are via cables, as in a traditional network. However, any type of network connection will do. In particular, you can use a wireless connection.
Here is an example. Let’s say you have three geeky friends, Manny, Moe and Jack. Each of you has a laptop computer that runs Unix. You use Debian Linux; Manny uses Fedora Core Linux; Moe uses Gentoo Linux; and Jack uses FreeBSD. (Jack always was a bit odd.)
You get together for a Unix party (that is, computers, caffeinated drinks, and junk food), and you decide that each person should have access to the other three computers. First, each of you creates user accounts on your own computer for the other three people. (I won’t go into the details here, but it’s not hard.)
I created user account on two computer but have no idea how to reach another from one.
Do I miss any points? Could you offer any hints?