Their user interface is developed to be as intuitive and simple as possible, so it doesn’t require formal training to start using the system.
In fact, the first time you use the individual functions, you get walk-through prompts to tell you about the page and what you can do, which really help you on your way.
The online help pages for the UK offering are comprehensive enough to cover maybe 90% of users’ questions. When the service launched in the UK a couple of years ago, the help pages were not as good.
Through the support section on the website, you can email or call Square between 9am and 5pm Monday to Friday. There is no customer support during weekends or nights, so if you run into an issue during those times, you will have to wait until their support team is next working. Normally, the system runs smoothly and is simple enough to figure out, so this should not be a problem for most people.