We chose Square both because we find it the most intuitive sales platform you can adapt for any business, and because its software is completely free to use. First off you will want to create a Square account here. Those familiar with traditional POS features will quickly recognize how to navigate the system both on the computer and iPad. People who are new to POS systems will be able to follow along as the software walks you thru its dashboard. If any portion becomes confusing; select the support tab at the top and explore Square's comprehensive guides for any question you may have. We recommend setting up your account and adding items is done most productively on your computer before using it on your iPad, but either can be done with success.