It takes time to become a good plumber, i.e., he has to spend more time for his career to be successful. There are many areas where a water leak like "wet only plumber" & in "Gas Industries". In the first type work is done in homes such as fitting bathroom, sprinkler system. Second type is very sensitive. To work in a gas industry one has to first achieve Council of Registered Gas Installer Certificate. Some plumbers normally work in domestic areas such as leaky taps & blocked sinks etc. Normally whatever field a plumber chooses the basic thing he must know is Water Regulations & Building Regulation.
There are two, one on each side of the toilet, closet bolts which hold the toilet to the floor. If there are caps over the bolts, remove or pop them open. Using a small crescent wrench unscrew the nuts from the bolts. Alternate side to side when unscrewing this will be much more important when reinstalling the water line repair bolts but alternate anyhow.
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.
Getting advice from someone who has not made any money online is like asking a plumber to shoe a horse when they have never done so. Why in the world would you do this?
Be certain that the bathroom exhaust fan vents to the outdoors, not into the house or attic. If the exterior vent dampers don't operate properly or water line repair don't seat well have them fixed or replaced.
There are a lot of different shapes and styles of toilets but, with a few exceptions, they all work about the same. Water is released from the tank (many commercial toilets use a special valve instead of a tank) into the bowl to flush the waste into your drainage piping. Basically pretty simple, right?
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.