Big pants that go over your belly to avoid the scar
As a PP said, adult incontinence knickers instead of sanitary or maternity pads. They're just easier
Stretchy, elasticated, soft PJ bottoms which again, stretch over your belly, avoiding the scar
Get moving as soon as they say it's ok
Don't lift anything heavier than baby
Keep your scar clear and dry, try to air it out as much as possible
Drink plenty of liquids, it'll help with any constipation
Be prepared for weird pains. I had shoulder pain which they say can be a result of surgery
If you're planning to breastfeed, be ready with lots of comfy pillows or a feeding pillow so baby isn't pressing on your scar, and have everything within reach so you don't have to stretch for anything while you're feeding
Be prepared for an infection - I got one from having a catheter in and it took me a couple of days to realise something wasn't right (I was going from shivery and cold to hot and sweaty very frequently)
Don't be afraid to ask for painkillers and don't be tempted to miss a dose. Take what they give you for the first few days and ask for more if you need it. it won't be long before you're on Paracetamol and this way, you won't have to worry about pain
Try and make sure everything at home is ready for when you get back (nappies, baby clothes etc plus clothes, pads etc for you) so all you have to do is cuddle up with your newborn and have a well deserved rest 😊