I usually keep them, but if I don't like them I hide them in a desk drawer to give them to someone else next Christmas (as long as it's not the person who gave it to me!)

I think there are only 2 - the yellow flame when the air hole is closed and the blue flame when the air hole is open. Although if the air hole is half open you can get a sort of inbetween flame...

Look at pics of food on the Internet. No wait... That will make it worse...

Round, brown, hard outside, hairy, about as big as a rugby ball.  The inside is white flesh with pale white juice stuff (the milk).  
See picture.

If you mean learning to play an instrument...

It's good because
it helps you to understand how music is built up
if you play in an orchestra you learn how to play music with other people
if you play in a band and you are good you can do gigs and get money … Read more