How do I refill the AdBlue in my Audi A3?

I recently received a notification on my dashboard saying my AdBlue tank was low. I have no idea what this is or how to refill it. Can someone please walk me through the steps? Thank you!

First, locate the AdBlue tank under the hood of your Audi A3. It is usually near the front of the vehicle on the passenger side. Then, open the tank cap and use the AdBlue refill kit to fill the tank. Be sure not to overfill. We recommend using a funnel to avoid spills and mess. Finally, close the cap and your AdBlue tank will be full and ready to go!