Like a 110 blade, the 66 blade will have a cut and non-cut side. Punchdown connections are really pretty easy, once you have the proper tools, and know where the wires go. If you look very closely, you will see a row of 'teeth' on the underside of the exposed pins. These teeth pierce the insulation of the cable to make electrical contact with the copper wire. Your supplier should be able to provide the proper crimp-ons for your cable type.
Solid cable is difficult for a novice to crimp, stranded cable is even more difficult.
This is where the round cable stripper mentioned earlier helps to do a neat and quick job. Next, separate the wire pairs by fanning them out slightly. Now, align the wire pairs into the color-coding scheme you are using in your system. After the wires are aligned properly, straighten them out for easy insertion into the connector, and snip the ends of straight. Insert the cable into the connector, paying close attention to ensure the wires fall into the appropriate slots on the connector.