is incredibly easy, and IMO, fishless cycles are a piece of cake, so I'll walk you through it.
1)Set up your tank and filter the way you want it. (filter MUST be running at all times)
2) Get it up and running with dechlorinated water.
3) Add a piece of raw shrimp (in pantyhose), and leave it in.
4) test once a week for ammonia, nitrItes, and nitrAtes.
5) You should over time see ammonia rise really high, then fall to 0. Once ammonia is 0, you will see the nitrItes rise really high and then fall to 0. Once nitrItes are 0, nitrates will start to show.
6) Once your parameters are ammonia:0 , nitrItes 0, and nitrates: 5+ you are done cycling. (the cycling process can last a while)
7) monitor the water for another three days to make sure the parameters are steady and don't fluctuate.
8) remove the shrimp and do a 70-90% water change.
9) add fish!
Depending on how stocked you are, you might be doing anywhere from 20% water changes weekly to 50% water changes a week. Once a month, take your filter media and swish it through a bucket of old tank water to get it cleaned of muck. The benificial bacteria grows on surfaces (primarily in the filter), not in the water, so don't scrub your tank down.
The bacteria grows well in warmer waters, so during a fishless cycle it is fine to push the heat up to something like 84* F. It also grows slowly in too extreme high or low ph, so expect it to take a while if your ph is extremely high or low.