simple things

how does one go about making up the crib? I've googled til I can't google no more, and all I can find is what I already know, and contradicting information about things like bumper pads. Do I put the absorbent sheet under the fitted sheet? How does that save me having to change the whole shebang if the baby leaks? Do I use the top sheet of the sheet set? Do I use the quilt? It's not fluffy or anything, but I'm all paranoid. I have lots of fleece blankets, but I think they fit in the 'fluffy blanket' category, so I won't use those. I know no pillows, fluffy blankets, or toys, or anything for a while. Some places say go for bumper pads as long as they're secured along the sides of the crib, but not once the baby can pull himself up, others say not while the baby is tiny, but ok later. I feel like a tool, but the really basic stuff isn't covered anywhere, just the stuff that should be common sense like, 'your baby can't control any of its muscles, so don't give it things it can roll into and suffocate itself with', and 'don't leave cords for the baby to strangle on dangling about'. Thanks.