As a webdeveloper I have, like many, my own VPS. However, I am a webdeveloper, not a system manager. For me it's quite challenging to install a VPS and to keep it up to date and secure. It takes me days, if not weeks, to get a server up and running. I also hardly dare to update my server since I'm afraid I screw things up.
So my question to you is what resources can you recommend me that won't only tell me how to install a LAMP server, but also explains how to keep everything up to date and secure?
edit: Installing everything isn't the main problem, the main problem is configuring everything such that is is secure and that it works. Most tutorials just tell me how to install everything, but usually that's just not enough.
In my specific case I have a CentOS VPS for which I need LAMP, ftp and email. I also host multiple domains on one VPS.