Before starting to sell a product (it doesn’t even matter whether you created this product or somebody else did it for you), you will need to conduct some keyword research first to target your customers. This can be a rather tricky process especially in the beginning, but the more time you are going to dedicate to the task, the more you can expect to benefit from it and the easier everything is going to become. In case you do not know that much about keyword researching, I recommend that you look for some info about it on the Internet. There’s tons of info about it on the Internet and I am sure that everybody can learn a lot from all those resources.