Well if it was for french people i'd say
siteduzero.com
It goes from languages to OS to building your own pc to using different software to making games to electronics to... Almost everything related to IT is in there.
It's excellent and each tutorial or courses really takes the students by the hand and starts from zero (almost completely zero) and progressively teaches you everything in an enjoyable way.
The site has millions of members, has already a lot of experience and even recently started an annexe that teaches school-stuff (chemistry, maths, physics, ...)
I can vouch for that site, i've read a lot of courses over there. eg I learned using
and understanding pointers in C in an easy way (which i had problems with with my old books (and probably because i was a small brat))
But as I said, if you don't understand french, it will be hard to follow the tutorial
so if anyone has any useful links I or others could use post them even if you have some tips or stuff I'll edit this post to include links and stuff 
