Being a sales rep for a start-up is one of the most difficult kinds of business. Despite the challenges, this kind of sales has its charms, as it allows you to set up new rules and try out new innovative methods. If you're successful, you can earn a lot of money and have many new options available. And because the very beginning is always the most difficult part, here are tips on what to do to acquire your first twenty clients for your start-up as quickly as possible.