Imagine walking into a busy train station with all the hustle and bustle and noise, then putting your fingers in your ears and closing your eyes. My births were like that! Crazy manic excitement while labouring, then when baby was out, suddenly calm.
I spent about an hour after each birth (so from baby coming out) having cuddles with baby on my chest, waiting for placenta, stitches etc. You'll probably have a few people around you- your birth partner(s), midwives, nurses, maybe doctor. I think the most I had was about 6 people+DH. I was never alone, ever. And if you want to not be alone they won't leave you. They tell you what you need to do, when, what's happening next etc. There are no silly questions in a labour ward!
My orders generally are:
Birth, baby on chest, placenta, stitches and clean up/shower, tea and toast, up to ward, visitors.
Also, a midwife showed me with DD1 how to do a nappy on a newborn, bathing (demonstration, her first bath wasn't for a while but wiping eyes etc), feeding, how to carry a baby while walking and transferring between arms. If there's something you don't know, they will know it and show you how to do it. Youtube, tiktok, books etc are great for basic demonstrations of how to care for a newborn. Maybe watch some "day in the life" videos of newborn mums so you get a feel of what happens.