As you can see, the concept is simple: put the coin into the inner holder, add a label if you wish, and then snap the plastic case around it. Done.
Well, not so fast. First, obviously these come in different sizes. If all you will be using these for is standard U.S. coins, picking what you need is easy. If it is tokens and medals you are slabbing, you need to measure carefully to pick what you need.
Second, there's a bit of a trick to getting the coins into the inserts. You'll find some instructions here: http://www.amosadvantage.com/scottonline/Premier_cwch.asp which explain how to bend the insert and wrap it around the coin. Don't overdo the bend, though: if you bend too much, the insert will tend to stay bent and that will interfere with closing the case.
It's also critical to line up the insert properly before trying to close the case. As you can see in the photos, each case has a plastic ridge that matches grooves on the insert. If those don't line up, the case won't close securely.
You'll notice that they do sell labels to fit these inserts. While putting labels inside certainly makes for a neater and more professional appearance, I have not been able to ascertain if these are acid free and therefore safe to be sealed up with coins. I'm not saying that they are not - I simply don't know. It is easy enough to find acid free labels, however.
Here's the finished product (that scratch is on the coin, by the way).
Note: All my coins are in a safe deposit box. I keep nothing in my home.
This week's Coinweek Giveaway: http://www.coinweek.com/~cd53550787d934d
Also multiple contests going on at http://www.moderncoinmart.com/forum/forums/contests/