If not, please learn! I never realized I would need to know how to turn off the water in my house, but had a horrible incident last week that made me realize that you need to know these things! The water line on my toilet exploded (from wear and tear, I guess - it was all made of cheap plastic), and I did not know how to shut the water off. I had quite a flood which resulted in a lot of damage before I was able to get someone to help me do what should have been a quick and simple task. Next time (which will hopefully never occur) I will know, but I just wanted to give everyone else a heads up that this should be one of many basic things a homeowner should know. I've owned a home for over 10 years and was oblivious.