There are two options: 1. You can promote high-competition products and spend more money on promotions, but the results will come quicker and might be better than the second option. To find high competition products you go to Clickbank marketplace and filter any category by Gravity 2. Or you can go the smarter way and promote products with low competition. It will be easier, because there are less advertisers who are promoting the same thing as you. To find a low competition product go to any desired category on the market place, sort by Popularity and go look for the products on the last pages. But make sure you earn good % of commissions.