Debian is a preferred Linux distribution, that is used mainly on desktop machines, but lots of people have begun using it lately as a web server Operating System as well, because of the stability and protection it provides. The latter is a direct result the fact that Debian is developed and supported by thousands of qualified volunteers worldwide, so that any patch that's needed to fix a particular issue is released in a matter of days. The very same community will also help with any question or trouble which a user may ever encounter, since they can be contacted via email using e-mail lists and a qualified response will be sent in around 15-20 minutes. The advantage here is that your questions will be responded to by the same people who have made the Operating System itself and they have a detailed knowledge of how it functions. As Debian is absolutely free, you will not need to pay any license fees to use it and you can personalize it as much as you want or need. This is valid for both the Operating System and the 30.000+ software packages that are available for it.