Bud's answer was a good one, about asking your brother. Some apprenticeship systems, anything done for the first time has to be asked about first. It can be a pita, and the tendency is to move forward on your own, especially in a country where everyone is thought to be a creative genius, but even with what appears to be the simplest of tasks, there can be a rhyme and reason as to how it is done. Young people don't seek enough advice about things, wisdom and experience is all there to be tapped into if you want to avail yourself of it. It's a pretty short time in life when people from all walks will want to help you, respecting your youth and ambition and probably remembering when they were there themselves. That will change abruptly when you get older, many doors will have closed. It's ok to bug people to get help when you are young, take advantage of it. For example, have you asked an experienced mechanic what is the best way to achieve the skills that you seek?
Excuse me while I go take my cough medicine....say hi to your bro.