Installing Castopod is pretty straighforward. You do not need advanced skills in server administration. Depending on the traffic you expect, you may choose a dedicated server, a virtual machine or even a mutualized hosting (as long as it runs php/mysql and allows to specify root folder).
@Castopod Great initiative! I looked through the articles, but I can't find a link to download Castopod.
You may find it here:
The Podlibre Initiative, designed and built by and for podcasts lovers. Podlibre.org builds decentralized & open-source solutions for voice lovers