I would like to ask some questions because i am beginner at this area.

-What is electric guitar cabinet and what is the difference between cabinet and amp?

-What is electric guitar heads, and foot controllers?

Thanks in advance,
A cabinet is a box with speakers. The head is the actual sound processor and amp portion you plug the guitar into. You plug the head into the cabinet so that the sound has speakers to play out of.

The foot controllers change between a clean sound and dirty sound in most cases.