Here's how I did it, remembering my dad's advice and doing this with him as he watched on. Now he wasn't any Nate, but he was pretty close, in my eyes.
Clean everything, put the bearings in your hand, scoop out some good wheel bearing grease and push it into the bearings over and over, until you are sure you have all the little cavities full. Next, put grease all over the races. Not a bunch, but enough to cover because ...
Install.
Put the hub back on, put washer and castle nut on, put wheel on, start spinning the wheel as you tighten nut. Keep tightening until the wheel starts coming to a stop... When this has happened, back off until you can get a perfectly fitting pin into the cotter hole.
Don't follow these directions until someone validates.