I use Imperial dry neck lube for the insides of my case necks IF I have to full-length resize them and have the expander ball working through the inside of the case. I also use Imperial sizing wax on the outside of the case. That stuff is the best thing since sliced bread IMHO. I bought a little tin of each the dry and the wax about 15+ years ago and I'm sure there will be plenty left in the containers when I pass on to my home in Heaven 15 to 20 years from now. For the dry lube, I just place the open tin on my reloading bench, take 5 or 6 fired casings in my hand, bump the case mouths on the loading bench so they are all even on the mouth end and then bump them up and down in the dry lube a couple of times to get the lube inside the case mouth. Then I bounce them gingerly on the cover for the tin to get the excess out of the case necks and off the outside of the case neck. When I have all my empties dry lubed in the necks, I take the cover off tin of Imperial sizing wax, rub my thumb gently into the wax, then rub my thumb and forefinger together and then take an empty casing and rub the wax onto the body of the casing. It doesn't take much, so get just a wee bit on your thumb and forefinger.
When I am done resizing, I use a clean dry rag to wipe off the wax. If I am having trouble getting the wax off, I'll dump the brass into the tumbler to get the remaining lube off.