I've not been here long, but I think it would be safe to say that your first order of business is to write. Not just anything, but something thougtful or thought-provoking, something insightful or helpful, something fictional or entertaining. At the end of the day, regardless of how many clicks, or whatever SEO techniques you might use, or however many affiliates you may have, none of it is going to have any sort of a payoff if the writing itself is not good.
So write. Learn about how to effectively use HubPages—there's a ton of information around. And write some more.
A doctor doesn't get paid to cut until he at least knows how to hold the scalpel. Even then...he's got to make the RIGHT cut.