Many affiliates struggle to make enough profit from the sales they make to allow them to reinvest that money into more content or marketing. Once you do find a product that people can and will buy online, make sure it offers enough commission per sale to make it worth your while. There’s little sense in promoting light bulbs for 1% profit per sale.
If you are going to learn how to do affiliate marketing and you want to make real money (not just play at it as a hobby) then you need to learn from Omar and Michael. Why? Because I have seen firsthand how they can not just send tons of traffic but snag tons of sales. Whenever they have promoted any of my offers I'm amazed at the flood of sales notifications that come in. To get both these guys give you their blueprint for this price is crazy. Buy it but please treat it like you spent $200 on it so you value the info, use it and profit from it!