What if you broke down in the middle of nowhere? And no you don't have ur phone with you.  You notice that white smoke was emitting from the exhaust, your engine was feeling week, and you ran out of oil relatively quickly. You need to replace a piston ring. Replacing a piston ring like all things associated with cars sounds complicated. I will break it down into a few steps that will make it easier.  Before I tell you what you need to do, you will need a few things. Piston ring, piston ring tool, wrenches, sockets, torque wrench,and kerosene.  You first need to remove the cylinder  head to get acces to the pistons. To actually get the cylinder head off, the bolts around it need to be unscrewed.  Clean all of the grease and muck off of the cylinders. For the next step cleaning the pistons, make sure the cylinder holes are covered to keep debris out. When enough dirt has been cleaned off the piston then it can be extracted. Next consult your manual and remove the cylinders. After they have been removed wash them in kerosene and allow them to dry.  Use your piston ring tool to remove the piston rings. Be careful if the grooves on the rings are too worn the whole piston has to be replaced! Use your ring tool and stretch the ring over the piston, but be careful not to break it. Make sure the piston rings are secure in the piston grooves and check it one more time. Put back the piston and check the head gasket before you replace the cylinder head. Then reattach the cylinder head.  I got my information from www.doityourself.com. Next time we are going to learn how to fix more engine parts, probably the drive train. I hope by the end of this project I will have learned a lot about fixing things on my own.