learn forex trading

I want to learn the basics of forex trading?
what is a simple free demo online. I've tried forex.com, and I did not understand nothing on the site. I want a an easy one to learn the different aspects of currency trading. Please, no winning strategies. I am not interested in learning how making money, learning the basics.
why not try and freeforexebook.org babypips.com? Both websites teach you the basics. You can also search "Articles of the currency" in google or yahoo.