if you read through all the stickys you should be able to figure it out. missfishys is the best but quickly. Cycling a tank is building up proper levels of bacteria to break down ammonia and nitrites in your tank, most levels of ammonia and nitrite are hazardous to fish. cycling is the process of adding ammonia to the tank until the bacteria forms and breaks ammonia down into nitrIte, then it eventually breaks nitrite down into nitrAte. Nitrate is not hazardous to fish in moderation the way to get the nitrate to stay at a good level is through water changes. Now the type of cycle you want to do depends on the person but i suggest a FISHLESS cycle which is adding ammonia to the tank daily with no fish in the water until the bacteria is built up to break it down, then you will see your ammonia drop and nitrItes climb, then after that the nitrItes will drop and turn to nitrAtes. once this has happened your tank is now cycled and is safe for fish as long as you keep up with water changes, the frequency of the changes is based on the bioload (poop and amount of feeding) produced by the fish. Adding gravel from an established tank will jumpstart your cycle and produce some needed bacteria but it still needs to cycle because it is only a small amount. To seed the tank you can take a new pair of pantyhose and make a sock out of it fill it with the established gravel and place it in front of the return on your filter depending on the type you have. a better way to seed is to squeeze out a filter pad from your friends tank or your other tanks or actually use the filter pad in that tank. The entire process should take 3-6 weeks however it can take longer. hope that helps.