Once you have your Linode box set up with your favorite Linux distribution and you have setup your web server and mySQL server you are ready to put your actual Drupal site online. This Drupal on Linode tutorial will walk you through exactly how you do this. Soon I will have a few up to date writeups on how to setup your Linode box and install a Linux distro but for now you can check out this somewhat out to date tutorial. If you follow it up until the part of installing your Drupal site then you can pick up here.