Fixing Leak in Well Supply Line
Turn the pump off (or unplug it) and open the nearest faucet from it and allow whatever pressure to drain off. There will be residual water in the lines that the pump is supplying. You can drain those off by opening the farthest hot & cold faucets (for air) and the lowest faucet or hydrant to allow this to drain off.
Also turn off the power to your water heater so you won't damage it if the water gets too low in the tank while you're draining things down to repair the pump line.
Priming a shallow well pump:
The small 1/4" bleeder plugs are to drain a pump for the winter. A primer plug should be on top of the pump head and be 3/4".
You will need one gallon jug of drinking water, an adjustable wrench and teflon pumber's tape.
1. Wrap 2-3 flat wraps of teflon tape around the threads of the plug clockwise only as the threaded end faces you. Close all faucets.
2. Fill the pump head from the jug, plug in the pump and quickly begin hand-tightening the plug. It will sputter and spew a bit as you do, but that is normal. Listen for the pump to begin picking up the prime (it will begin to sound a bit labored). If you think that the prime has been picked up, tighten the plug with the wrench.
If the prime has not been picked up, repeat the process until it is, including replacing the teflon tape.