This looks very sleek-eh? Do you have any idea what is this? It is Line 6 AMPLIFi FX100 a multi effects pedal used by a professional guitarist. Yes, foot operated amplifier and multi effects device is the widely used music accessory currently.
I have seen guitar players practice it for hours on at the cultural learning center near my home. While they are at it, I have seen the intent look on their face that spoke of immense concentration.
The more they practice, they more creative they become. This is one device where self learning is required.
These days, a passionate artist can tap into huge resources of music patches uploaded by other musicians. A budding guitar player can then use it after tweaking with the help of the above such devices.