Yes you need scratchmits - I got mine from primark 10p a pair.
Pushchairs are bigger, heavier and usually more versitile than strollers. often you can attach the car seat to them or a carrycot to turn them into a pram.
Strollers are light weigh, and basic, some lie flat others don't. IMO you can't put a brand new baby in a stroller, although you can probably get some that you can attach the car seat to.
You can buy most things second hand.
Cot/moses basket you will need to buy a new mattress but the rest is fine.
Pushchairs are fine second hand, they won't work if anything vital is missing.
Buy new bottles if you are going to use them.
I would buy a new car seat but if someone you know is selling one then I wouldn't be affraid to buy it.
Clothes etc fine second hand.
It is lovely to buy new things if you can afford them but absolutley not needed!
And babies grow so fast things are hardly used.
My pram/pushchair was used a handfull of times before it was sold!