Where to learn the Internet marketing basics from?

I really want to make some extra money working from home and am interested in learning Internet marketing. I currently stay at home with my two little kids but would be able to devote about 25 hours a week to Internet marketing. It’s just that I don’t know where to start. Where do I find some great resources that help me with the Internet marketing basics as all the websites I have come across are not for absolute beginners like me?