My First Book of Electromagnetism

Today electricity surrounds us and we use it for practically everything. In fact, it is difficult to find something that does not work with electricity. We need it to light up streets and houses, cook, cool, watch TV, play video games, surf the internet, send messages, and listen to music.

But what is actually ELECTRICITY? What does it have to do with magnets? By the way, what is MAGNETISM? And most mysterious of all, what relation does all this have to LIGHT?