Find a good online DIY source that you trust. I recommend This Old House for detailed and easy-to-understand instructions on common plumbing repairs you can do yourself. Make sure you know where to locate the main water supply and the supply to each plumbing application, which is typically located under a sink or behind the toilet. Lastly, familiarize yourself with local codes and regulations. Some municipalities require that you hire a certified plumber for certain plumbing jobs.
One easy repair is fixing a constantly running motor. If you have a submersible motors (ones that are designed to sit inside the pit or well), this is usually caused by dirt or debris getting lodged under the float switch, which is the large floater bulb that looks very similar to the one in the back of your toilet. Make sure you know how to drain and clean out your sump pit, or have your plumber show you the next time you hire one.
Journeyman plumber: Once the requirements of an apprenticeship are fulfilled, plumbers can apply for a journeyman license. Many workers in the plumbing industry are journeymen. Obtaining a journeyman's license requires a fee and the successful passing of an exam. Licenses vary by state, although not all areas require journeymen to be licensed. Instead, the amount of work they are able to perform is limited.