What do the various bells and alarms on my Audi A8 indicate?

I recently purchased an Audi A8 and I've noticed there are a lot of different beeps, alarms, and chimes that go off while I'm driving. Can someone explain what each one means and when I should be paying attention to them?

The red flashing light and beeping sound you hear when you turn on your car is a reminder to fasten your seatbelt. Always buckle up for safety! -Liam Stevens

If the yellow tire pressure light comes on, it means one or more of your tires is underinflated. Check your tire pressure and refill as needed to maintain proper pressure and avoid damage to your tires. -Maria Rodriguez