Everybody else has given very very good advice, so now I'm going to give you mine.
Decapping is the perfect job for the Lee Hand Press. I keep a universal decapper installed in mine so I can de-prime brass while watching the idiot box or surfing the web. Oh, and I usually de-prime before tumbling so the primer pockets get cleaned. This seems to work better on large primer brass rather than small primer brass, I guess it's easier for the media to get in and clean. You do have to check your brass afterwards to make sure there isn't any media stuck in the flash hole or primer pocket.
I think hand primers generally are better than priming on the press, you have a better feel for correct seating. I have two of the Lee Deluxe hand primers, but I haven't had any of the problems Precision had with his. I keep one set up for large primers and the other for small primers because switching sizes is a pain in the tail assembly.
For lubing rifle brass, I like the Hornady One-Shot aerosol lube. I put the brass in a small plastic bowl or tub, spray some lube in and shake the tub to spread it around on the brass. This gave sufficient lubrication to allow full-length resizing of .223 & 7.62x39 brass with my Lee Hand Press, though a bench mounted press is much better for that task. For larger brass like your .308, it would probably be better to use Randy's cookie sheet method, stand the brass upright so you can spray both outside and inside the case neck.
For measuring powder, I have a Lyman digital scale/measure combo, an RCBS Uniflow powder measure, and an RCBS balance beam scale. For rifle loads, I like to set the measure to throw 1 to 2 tenths of a grain short, then trickle up to the exact charge. I also do this for fiddly pistol loads, like .32 ACP, where the difference between not working, working, and
KABOOM comes in tenths of a grain. The digital scale/measure is pretty much a luxury item, it basically just automates the measure & trickle process. As JustinR mentioned, both digital and balance beam scales are sensitive to air currents, so be careful with fans and A/C vents.
Well, there you go, advice that's worth almost as much as you paid for it.