Wish I realised that when your waters go THEY KEEP GOING! Might have been an idea to bring a towel in the car to the hospital... ooops.
Wish I checked dh could tie up my hair BEFORE having a load of canulas in my hands!
Wish I knew more about types of instrumental delivery. I had a Kiellands forceps delivery (rotational) - didn't realise it was any different or more risky to a regular forceps delivery. All was well BUT I would probably request a c-section if in the same situation instead next time.
Things I did know that helped:
Bring a stressball to squeeze on for internals - loved this and also helped me a lot during contractions
Got dh to keep a labour diary - kept him occupied and is hilarious reading now, especially the gas and air stuff: 'contractions are like when you're in a taxi and you know you're going to throw up and have to pay for it but you're just hanging on. Like the headache bit, before you throw up. Like a taxi to Harrogate' OR about the epidural, while still a bit doped from gas and air 'it's like being a bird flying over the sea when the sun is setting on the waves'. Yes ladies, I was that poetic
TENS machine - also a good thing for me