The JMeter GUI is very intuitive and easy to use, common menus for file handling like new, open, save, save as etc. and specific menus for starting and stopping test plans and configuring them are available. Every test plan, thread group and test plan node (we will see these more in detail in the next chapters) offer different context menu options by clicking the mouse right button.
It is also possible to change the language of the UI and a big bunch of languages are available.
As we said, the GUI is very intuitive and easy to use and offers for every menu and action very understandable tool tips. This is one of the reasons, apart from its quality, why JMeter is so broadly used, because it is really easy to understand and learn how to work with it.