Users don't need much technical knowledge or expertise. WordPress offers search engine optimization-friendly uniform resource locators, resource description framework site summary feeds, post categories, sticky pages, and an interface suitable for nontechnical writers who want to contribute to the content and to queue, schedule, moderate, and protect posts and pages with passwords.
In housing terms, VPS hosting is like renting your own apartment in a larger building. You're much more isolated than in the roommate situation mentioned above; it's still possible that a neighboring apartment could causes annoyance for you, but far less likely. In web hosting terms, Site A's traffic surge won't have nearly as much impact on Site B or Site C. As you'd expect, VPS hosting costs more than shared hosting. You'll pay roughly $20 to $60 per month.