The document provides instructions for setting up password-less SSH login between two computers. It recommends generating an SSH key on the local computer using ssh-keygen, then copying the public key to the remote server by piping the output of cat ~/.ssh/id_rsa.pub to ssh and appending it to the remote ~/.ssh/authorized_keys file. This allows logging into the remote server without entering a password when connecting via SSH. It also includes links to visit the author's website and follow their Twitter account for more information.