What ages are we talking about here? I remember shaving for the first time in high school. It was a wrestling match and you weren't supposed to have facial hair at the time. All I had was peach fuzz, but the referee made me shave it.
I'm not sure how much I shaved at the time, but it was infrequent. I remember my dad's words on shaving, which was his same advice to me about taking a PT job "Once you start working/shaving, you'll do it the rest of your life." 
In regards to razor or electric, I have always had a much closer shave with a razor. I remember wanting to use an electric razor when I was younger, it just seemed like a cooler thing to do. However, to get as close a shave as a blade it would really irritate my skin especially around the neck area.
"Ladies, if you want to tell a guy something we need to hear it three times. The first time we didn't hear you and the second time we didn't think you mean it!" Dennis Miller"