What are some tips for somebody who is going to their first ever live music concert?
Everyone likes to take pictures and videos. DO NOT GO OVERBOARD! Take a few pictures, a video here or there. Try your best to be in that moment and enjoy the music, the atmosphere, and even the people around you. You and the people around you will be much happier if you aren't watching the concert through your phone the whole time.
^ My pet hate.
Also, ear protection. even if you don't need it, its better to be looking at ear protection than looking for it.
There's probably 100's more.