I understand you need a rating, but I am confused on how chess players arrange to get into chess tounaments, particularly for their first
Do you mean in person? If so, when you're ready, you just sign up and go to one. You don't have to have a rating yet, just have to meet the event requirements, so if it's officially rated, and you're in the US, you'll at least need to join the US Chess Federation.
I understand you need a rating, but I am confused on how chess players arrange to get into chess tounaments, particularly for their first