harro's guide is way way too old.
@unskilled: What you have to realize is you can't just come on a site, read a guide and make money. It's not going to happen.
You need to decide that you want to run your own online business and commit yourself to a year of hard graft which will include your first 3 months doing nothing but reading/studying, then the next 9 months doing 80% trying things and 20% reading/writing on bhw.
You wouldn't start university and on day 1 of a law degree ask if someone could explain the basics of law to you, would you? Running your own business is no different. You have a lot to learn and a long, hard, but fun road ahead of you.
This is the start of your journey. Go fourth and begin browsing the forum.