It is completely dependent on what your goals are and what you have to risk. Any business venture has some risk. Of course, like most ventures, the more that you invest and purchase, the more you will have available to sell and make a profit. I take a different approach. Instead of going "all in" on a system that you are just learning, start out slow. Get a few wins and get your experience underneath you as you learn how to best use the Book Profits system, the training program, and the software for you.