Very informative.
Always seek professional plumbing advice for your home's water delivery system.
Also, note where the main shutoff is (usually on the wall in the basement nearest the street in cities). It's important to "exercise" the valve periodically to ensure it works. Some valves will get clogged with minerals and make it difficult or impossible to turn the valve off.
Watch this video on PEX plastic water pipes commonly used.
https://youtu.be/CWgaP90CGmo?si=UVidkpF56_I0nGmu