Super Mario Sunshine/Delfino Airstrip
Speak to Toadsworth, Peach and the toads and they'll fill you in on what's happening. Notice the huge pile of multicoloured goop on the airstrip and the Pianta stuck inside it. Clearing this goop will be your first task in the game. But first you might want to just have a little look around the area and practice running, jumping, climbing trees and swimming, if it's your first time playing the game. It's a very small area so don't worry about missing anything or getting lost.
 Introducing FLUDD
When you're done exploring, head over to the group of Piantas and you will discover FLUDD. The FLUDD will then introduce itself with a short cutscene explaining the basics of how to operate it. After the instructions, spray the large letter "M" painted on each of the 2 boxes on your left, as a little practice task. Now you're ready to battle the huge puddle of gunk on the airstrip.
 The first Shine
Head over to the gunk puddle and spray the edges of it with FLUDD, (try not to get any goop on you). If you want to you can carefully spray the paint off the Pianta man that's stuck in the puddle before taking on the boss - although he doesn't seem very grateful even if you do.
Spray lots of water on the large blob in the centre of the puddle. This awakens a boss called a Gate Keeper, which looks like a Piranha Plant covered in paint. Spray it in the mouth 3 times to defeat it and be rewarded with your very first Shine.
As soon as you collect the Shine, the Delfino police arrive and take Mario away! He is taken to court on Isle Delfino and is told to clean all the graffiti before he is allowed to leave. After the cutscene you will be on Isle Delfino and the story really begins...
 Red coin shine at the airstrip
Once the water level is back to normal, go around town and collect 10 yellow coins. Then, go to the boatman. He will offer you a ride to the airstrip. Hand over your coins, and you will be taken to the airstrip. Get the Turbo nozzle and pound the red coin trigger, quickly zoom around the ground and water to get all 8 red coins within the time limit.