Debian is a preferred Linux distribution, that is used primarily on personal computers, still many people have started using it lately as a web server Operating System as well, due to the stability and security it provides. The latter is a direct result the fact that Debian is developed and supported by numerous qualified volunteers internationally, which means that any patch that's necessary to fix a particular issue is released in a few days. The very same community will also help with any question or problem that a user may ever have, as they can be contacted via electronic mail using e-mail lists and a competent response will be sent in around 15-20 minutes. The advantage here is that your queries will be answered by the same people who have developed the Operating System itself and they have an in-depth knowledge of how it works. As Debian is absolutely free, you will not need to pay any kind of license fees to use it and you'll be able to customize it as much as you want or need. This is valid for both the Operating System and the 30.000+ software packages which are readily available for it.