Hello @Tessy19
You will be able to go back to your listing and add lots more info once it's gone live and you have completed all the necessary checks.
Don't open your calendar too far in advance to start with (Airbnb set it automatically to one year ahead!) and think about whether you are ready to accept Instant Book reservations or not? It is a now a default setting for new listings. Here is a link that explains Airbnb's new listing settings:
https://www.airbnb.com/help/article/3107
All the best with your listing;
Joëlle