If discussing money is a difficult task for adults, it's doubly so where kids are involved. Not only is the subject loaded with cryptic jargon (mortgages? Bull markets? Huh?), but it often fails to click with how a kid sees his or her world. Many preteens and young teens do not yet have a job, and even if they do, their responsibilities with their earnings are miles away from grown-up money issues. In other words, not only is money a little overwhelming...