Park's tutorial doesn't cover this type of master link, and it's not the one pictured a few posts up. My chain uses the same kind that the OP has encountered:









You will need to shorten the chain an appropriate amount using a chain tool. If this is a direct replacement with the same gears as before, just lay the old and new chains out side by side to see where you need to shorten the new chain. When planning the shortening operation, note that you need an inner link at both ends of the chain, and the master link will create one final outer link that joins the ends of the chain together; plan accordingly.

You'll need a chain tool to "cut" the chain to length. If you don't have one and don't feel like getting one, stop by a friendly bike shop and see if they can remove the pin you specify to get the right length.

Installing the master link is literally dirt simple. Just slide the plate with the two pins in from the spoke side of the chain, slide the flat plate on over the stubs of the pins from the non-spoke side of the chain, and slide the clip onto both of the pins simultaneously. You start it with one pin kind of in the middle of the clip and the other pin off of the open end of the clip, and it literally clicks into place. You'll probably need a pliers or some other tool to get a little more pressure to snap it into place. I can't install or remove the retaining clips with my bare hands either.