instead of trying to rub talc,cocoa,baby powder,... or whatever onto your tube,... put the talc in a plastic bag with the tube and act as if you were getting ready to bake the tube and shake it. this will get the entire tube covered very quickly.
torque specs can always be related to bottles of beer placed on the the end of a 12 inch wrench
when installing a tube make sure that the valve is in the middle of the largest label on the side of the tire... "it looks professional and will help you to locate the source of flats" - the art of wheelbuilding
before you build a wheel read Zinn's The Art of Wheelbuilding
stop working on other peoples bikes if you don't want to work on your own anymore
don't spend all of your time on this website reading about bikes, get your @$$ in the saddle and ride!