Does this story sound familiar? You go to the hardware store spend forever trying to buy what you need, go home and realize you bought the wrong thing.
Or how about this story? Something goes wrong and you don't know how to fix it so you hire someone and pay a minimum of $50 for the repair.
I've found a much better solution. Take a picture of your problem before heading to the store. In the past year all 3 of my toilets have broken, a pipe corroded under my kitchen sink and most recently I had a leak at the connection under my kitchen sink (pictured). I have been able to fix these problems for less than $4 each time there has been a problem. Much less than it would have cost to pay a professional.
I simply take a picture of the problem area and take my camera with me to Lowe's. I show the worker where I have the leak and seek their advice on what tools I will need to fix it. They then show me where to find the parts as well as give whatever advice they may have on fixing it. In the instance of the pipe that corroded I also took a picture of the writing on the pipe so that I would know exactly what size I needed to get, not allowing my handwriting to confuse me if I had written it down.
Some plumbing problems can be very complicated and I would recommend a plumber for those but a simple problem such as a leaky faucet can be easily remedied by anyone as long as you know what parts you need. The best part of it all? The satisfaction of acomplishing something and not spending a lot of money doing it!