Hint on third world countries (or development countries, how they are called with political correctness in mind) and computer knowledge. They do have the knowledge.http://www.freedomtoaster.org/
There even are a number of projects teaching people how to use a computer. Don't you remember OLPC? There have been tons of similar projects, like surf stations and stuff.
About internet connection. One should maybe think a bit different when it comes to such countries. There aren't just fiber cables, but also other means that work way better over long distance, using lasers, infrared, etc. Especially when there is no building in your way. And no, something like a bird flying through or whatever neither roasts it nor makes the connection drop. These are technologies basically made for this.
Besides that there are things like satellite connections and stuff. Don't forget, you can just have a local network in some tiny town and one or even multiple ways to go to the next bigger city, a university (and yes, they exist in every country
) or whatever and you are done.
I guess a lot of infrastructure there is much more decentralized than ours, because they use stuff. Also, they all know Linux and stuff, so they usually are not absolute beginners.
And once you are in something like a city, you actually can stop caring about not having computer, energy, Internet, whatever. Than it is more like finding a computer store with good hardware, but if you really want to start such a project I am sure you would find a way to do so. Maybe one can donate old graphics card. Old as in, not good enough to make money if you don't have a solar plant.
Also, something you shouldn't forget is that there are not just very efficient, but expensive solar based systems, but there are exists a huge span between what is used in solar power plants over to what you have in your calculator and even stuff that can basically be self made. Oh and don't forget that lots of evil companies send their waste (and if a school, company, university or government replaces their IT one really shouldn't call it waste) drop their stuff their. So you actually have a lot of this high tech waste to use. So, if one would really start something like that like logistically and stuff this idea could actually succeed. Maybe on you even solve a number of problems in the progress.
So I'd say it actually could be worth a shot. Surely, one will have some hurdles, but so far I don't really see a problem that couldn't be solved by some people who want to give it a try.