The plumbing courses cover all the aspects that you will be required to deal with as a toilet repair. You will be taught about the basic aspects as well as about health and safety issues and sanitation.
Be cautious. If you've just become aware of a problem with water line repair in your home, there are a few steps you should take. First, if there's a lot of water (such as from flooding), you should turn off your electricity to avoid electrocution. Also, don't use your regular household appliances (such as a vacuum cleaner) to remove water. If the water is contaminated (such as from a sewage line), you and your family should leave the home so that you don't get sick. Finally, if the water is from a leak, try to locate the leak's source and turn off the water to prevent further damage.
After you have the stems out you should be able to find the washer on the "inside" end. If it is nicked, torn or brittle it is likely the cause of your drip. Even if it looks brand new, go ahead and replace it. You've already come this far. You can get replacement washers at almost any hardware store. Sometimes you may want to replace the whole stem, especially if the handle end is stripped out. It's best to just take the stem with you to the store and see if you can match it up. Most Do It Yourself stores have replacement stems for many popular brands. If your valve has a center diverter valve to switch the waterfrom the tub spout to the shower head the same process applies. Many times it is easier to replace the diverter stem than to repair it. This really depends on the design of the stem.
Depending on your repair job you might need a bucket that will fit below the sink trap, as well as some rags and newspaper. Masking tape is useful for labeling and for wrapping around the heads of the wrench to protect your chrome tap handles. Rubber gloves are recommended, particularly when working with the toilet, but there are greases and glues that you may not want on your hands.
Remove the cap of the faucet using slip-joint pliers. Tape the teeth of the pliers to prevent damage of the surface. Remove the faucet cam washer and water line repair the rotating ball.
To avoid this, make sure your toilets screws are always tight and repair any leaks right away. A new wax ring should also be installed any time the toilet is removed such as if you happen to be replacing an old toilet with a newer model that you liked such as a more modern KOHLER brand. Replacing your toilets wax ring is pretty simple to do and can pretty much be done in less than an hour by the average person.
The next huge thing is to prevent and kill mold that has already started growing. Mold is the most dangerous thing when an area floods. Mold can turn deadly within a extended period of time. Use mold killing agents like Killz and other products on the the market. Be extremely thorough with this process. If the water flooded above the dry wall line, you MUST remove the dry wall to make sure you can replace insulation and dry wall which mold naturally is attracted to. Painting a Killz primer on the concrete is a great idea before installing new carpet and drywall. This will ensure that you have prevented future mold growth and will also ensure the safety of your family.