From my experience I can’t say definitively that there is one universal way of becoming a vendor. There are no university degrees or college courses to complete, so this career path is arrived upon mostly through trial and error. If you have an ability to recognize market needs and high demands for products, you are well qualified to become a very successful vendor. All you need is a way to find a cost efficient product, and put your marketing skills to use. The most successful vendors that I know are self-driven people who won’t take no for an answer, and are willing to take the risks of being self-employed with uncertain fluctuations in income.