Plugs are simple. I have a 00 zx6r but they should be really similar. 4 10mm bolts on the tank 2 in front and 2 on rear under driver's seat. unhook the gas line and remove the tank. The airbox has 2 holes on the top with a rubber plug in them. Remove the plugs and there is 2 10mm bolts in there. Remove them and the 6 other 10mm's around the box. The box then pulls straight up and back. Then there will be some vacuum lines in the way, label them with a white out pen then remove them. You should then see your sparkplug coils and harnesses. Remove the harnesses and pull the coil and wallah there is the plugs. Like I said it should be very similar so good luck.
I buy my plugs at advance auto they are ngk cr9 and they are $3.50 each.
Download the free manual on the sticky thread from the technical help forums. It takes a long time to download but definatly worth it!