What is capable of Akai Mini Mk3?

Hello everyone, I bought a keyboard Akai Mini Mk3, tell me what it is capable of? The instruction contains only an overview but does not give examples of how to work with midi. I would like to know more about the hidden features. For example, as a beginner, I don’t understand what the "CC" button does, it’s also not clear to me how you can change the tempo that is displayed on the display.
(And forgive me for my bad English.)