One thing that every homeowner should know about their home is where their main water shutoff valve is. In the event of a burst pipe, major leak or any type of plumbing emergency, turning off that water quickly can save you thousands of dollars in damages.
Truth be told, many homeowners don't know where it is until it's too late. So general rule of thumb, the main water shutoff is usually near the front of the house, either is outside, near hose B in the garage, or by a water meter. My recommendation would be take a few minutes today, make sure you know where that main water shutoff valve is, and make sure everyone in the house knows where it is as well and how to turn it off properly.
If you wanna go one step further, my recommendation would be to install a mow and smart water shutoff valve. This smart monitor tracks your water usage over a period of time. It can detect any leak and turn off the water automatically. So this gives you a peace of mind and make sure you protect your home.