The potential earnings after taking these courses depend entirely on the effort and dedication you put into your business. Like any business investment, there is no guaranteed silver bullet for making tons of cash. It's crucial to perform thorough research on the niche you are pursuing, as not all niches are created equal. Some markets have strong demand, while others may have little to none. Your success will largely be determined by the effort you invest and the strategic research you conduct in your chosen business niche.