I am assuming that first, you have read this:
http://www.kokosgoldfish.com/FishlessCycle.html
If you added ammonia such that the readings stated 4ppm ammonia, you should be fine. The ammonia will not start to drop until the first type of bacteria that processes the ammonia grows a sufficiant colony - one that can process ammonia nicely. When you get enough of this type of bacteria growing in your media, you will see the ammonia drop. When it drops to 0.25 or less (zero) you will have to start adding in ammonia to the tank on a daily basis - to mimic the waste a goldfish would produce on a daily basis. Until the ammonia drops to zero, though, you have no need to add more at all! If you get the ammonia much higher than 4ppm it can actually slow the development of your cycle.
It has now dropped to zero - so you should have a lot more nitrite than you are reading. But lets go with that now......
When the second type of bacteria kicks in and grows, you will see the nitrates rise and the nitrites lower. At that time, you will be heading down the backstretch towards home and the cycle is nearing completion.
You will be adding enough ammonia that if you were to take a reading immediately an addition, you would see it at about 1-2 ppm. If you are going to have a fully stocked tank it will not hurt to pump up the colonies of bacteria so they can handle 2ppm ammonia on a daily basis. Test the water each morning - before your addition. The ammonia should be zero. If it is not, add less ammonia - or have patience and the colony will grow.