I guess a big question is, with Nethserver is.. does it "just work" or is there a setting that needs to be selected? Not sure if this is the default behaviour or not.
Mostly this. I haven't done anything with it yet and before I invest the time, I'd like to know if it possible and/or how difficult it is, especially since a co-worker claims that it did not and he went with IIS to get the same task done (and then he sat there cursing the whole day because he doesn't like Microsoft products).
Start with old Desktop with Virtualization extension, something that you can install OS and dont have to remove cause of free space or you need it for something else.
Cause learning Linux or Centos or anything else needs environment, and virtualbox can work but it wont allow you play with KVM, and thats for me the big part of the fun.
Also you need to keep learning that means its is process some day you will leave it 4-5 days dormat cause your stuck in an issue the other day bulb lights up mainly due to reading this site and you get back on it.
Has anyone ever used SME Sever? http://wiki.contribs.org? Looks similar to NethServer, not as up to date of an interface it appears but I have used it at locations and it works well. It is based on CentOS.