For example a successful marketer comes up with:
health>weight loss>weight loss pills.
In this example the marketer was able to find a successful niche "health" and sub niche of "weight loss" with pills as his product.
How do you get to the first step. Finding a niche and sub niche and then product. Seems very overwhelming. I am not largely concerned with the technical side as that can be done instantly by using google. I just don't know how to find a good market.