This is just for starters...
I'll build it up as I go along. Don't for one minute think that these links are restricted to computing or technical resources. Some day you might thank me...General resources...
How stuff works, Doesn't matter what the "stuff is"...Wikipedia, Online editable encyclopedia, don't complain if "it's not accurate, fix it yourself!"Creative Commons, Shared work of all sorts, including courses and training material
Free Dictionary, Find out not just translations but explainations
Reference material...
Yolinux Linux Fundamentals - a superb resource!Life Hacker An invaluable cure for computer headaches of all severities!
Gentoo Linux documentation is superb, having material for LPI certification and a huge amount besides.
Course material...
Open Of Course, Courses on a variety of subjects in a variety of languagesHasty hints by yours truly...
For Software Freedom Day I've personally written some documentation forthe benefit of visitors. It saved my voice box a lot of strain, and it's here!