Use the Google keyword tool and type in the name of your product or service. For example, if you are a plumber, type in "Plumber". Google will then list all of the words (aka keywords) that people type in to find a service like yours. You might see common variations like "Plumbing Expert", "Plumber Services" or "Pipe Plumber".
In case you want to become a plumber through apprenticeship, you will have to approach the local plumber's union, who can help you to find a professional plumber willing to hire an apprenticeship.
Your third option is a regular garden hose. Bring the hose in through a door or window (have it turned off, of course), put it down the pipe as far as it will go, add towels and rags around the drain to keep water from backing up, and then get a partner to turn it on and off in short spurts. The pressure from the water might work toilet to loosen the clog.
For instance if you are looking for a Trustworthy plumber, you can post a tweet in Twitter and ask for referrals. Be careful of spammers who may connect with your keywords. Trust the comments that come from within your network.
If you have to call your Local plumber to do work such as renovating your kitchen or bathroom, purchase the parts yourself directly from your plumbing merchant. You can often save considerable money by buying this way, and most plumbers are happy to supply you with the information to enable to buy the correct fixtures for your job.
There's water all over the floors and the basement is flooding, it is time to call someone to help with your plumbing situation. With water going everywhere, you don't have time to look around and figure out what happened and how you can fix it. When a problem arises that creates damage to your home or the area around it, you want to make the call for help. Let an expert come in, attempt to stop the flow of water, and begin to diagnose the problem.
Once you have become a master plumber you can start your own plumbing company or you can even work for the government. This may sound like it is going to take forever to become a master plumber and it is difficult to achieve this level but it is not. Yes, it is going to take several years but the prestige title at the end is worth it.