I find the getting started documents/guides over at Digitalocean and Linode very helpful. https://www.digitalocean.com/help/getting-started/setting-up-your-ser

I find the getting started documents/guides over at Digitalocean and Linode very helpful. https://www.digitalocean.com/help/getting-started/setting-up-your-server/ https://www.digitalocean.com/help/getting-started/setting-up... https://www.linode.com/docs/platform/linode-beginners-guide https://www.linode.com/docs/platform/linode-beginners-guide From there, there's a whole lot of other topics too, web servers, the usual LEMP/LAMP stack. http://www.cyberciti.biz/tips/linux-security.html http://www.cyberciti.biz/tips/linux-security.html on the basics of security too. Good luck!