Im Chris, 24 years old, starting at UPS as a part time package handler next monday.
If any of you had to choose one piece of advice to give me for the future or now in general to work my way up, please feel free.
Chris
One piece of advice in general: I'll give you two - work up the belt (seriously, work up the belt); and put the slap/PAL on the end of the box. These two tips will help you never fall behind, and catch misloads. If you can manage those two feats, no supervisor or manager can "really" give you crap about anything.
To work your way up: Depends on your location; some places they hire based on incompetency, other places hire based on competency. You will see for yourself which area you are in.
edit: Oh. and Good luck; figure out why you are working at UPS as a part timer before the first week is up; that is the only reason you will stay, probably.