The cleaning kit is from K&N. It comes with 2 bottles. Like Kevin said, just read the instructions. It's really trivial. Here's the basic idea...
There's a spray bottle of cleaning solution. Tap the filter to shake out any debris. Spray the filter LIBERALLY with the cleaning solution and let it soak in around 10 minutes.
After it sits, rinse it with water. I only run water UP/OUT through the filter, pushing the crud out from where it came in. This is easy on mine since it's a rectangular flat filter. I rinse it really well until the water runs clear.
I then let mine dry overnight in a warm, dry spot.
The next day I take the 2nd bottle, the red oil, and I squeeze out a good bead of oil on the top of each pleat. Let that soak in pretty good. Reinstall the filter, done deal.