Magic Forums

I was just wondering what's a good age to start teaching magic. If your parents taught you, how old were you? If you taught your kids, how old were they? Also any advice or good starter spells will be appreciated. The only one I've taught them so far is a popcorn spell, where you shout a wish every time you hear a pop. We do it just for fun though, without a circle or any ritual. Thanks in advance for any input.