I started out as a helper, years ago (as they say)..and yeah, you have to do all the running around, get this, get that, go here, dig here etc..but you WILL gain knowledge, running back and forth getting materials will help you learn what types of materials we electricians use, and what they are called, and why we use them.
Being harrassed, digging ditches, cleaning up the shop, getting breakfast etc, is all part of paying your dues. It is how we weed out the ones that are truly not interested in being an electrician.
Get in as a helper, pay your dues, and you will see it pay off in the long haul.