human.interface.neuroligical.matter.input.complete

I am J. Nice to meet all of you. This site is mondo efficient. I did not think I would have a question so fast, but I do. Any replies will be respected and welcomed. Now for my ?.------------

I am currently learning/exploring my OS. So far I have learned and understood much.
Yet now I'm interested in my xp mdos. However, I am at a stall, due to little experience with dos in the first place. I am habitually broke and cant afford to spend alot of money on books for this question. I am however engaged in college he in town and no library here has material for me.
::HERES THE ?::

Is ther an online addy or site to give me the info i need at no more cost to me excepy time?