What is easiest way to draw up a marketing strategy for a small online business?

What is easiest way to draw up a marketing strategy for a small online business?
Is it not as simple as SEO’s, a bit of offline advertising ( flyers) and a few adverts out on the net?

In marketing strategy, we have many-many techniques to run this. But for me, if you are new, better you try invest a lot of money to purchase ads from top website. I like use pay per click technique especially from adwords, yahoo and adbrite..