Often, the first steps in any project seem to be the hardest. So it is with ThingStudio. Often people get stuck at the step, which with ThingStudio is getting access to an MQTT broker. This post lists some of the many different ways to get an MQTT broker for use with ThingStudio.
ThingStudio has only one real requirement for working with brokers, and that is that they should support websocket connected clients. All the solutions listed here pass that test.