Maintaining a VPS is not that a bigger deal. It'll work fine even if you don't login to it for months. I rarely login to my server. Rarely anything goes wrong with my servers. It's not like on Shared Hosting where your site is among hundreds of other sites. there, things can go wrong really quickly. But on a VPS it's just you and your sites. Pretty safe.
But initial is something everyone can't do and should do properly.
Maybe you could do a guide for newbies on how to configure and maintain a server?
Re security, how do you prevent a DDOS attack? Or anything like that?