Im 15 andwant to start boxing...?

i would say go for it... ali was 13 when he began n there have been boxers training since they were 6 and really didnt turn out good. my point is youll never knw how good u are until u try it... its something good to knw anyways and i would recommend u look up roger mayweather boxing drills on youtube and try that approach since its very fun.