I have had two litters, 6 and 3, the first litter was just incredible and was possibly the most satisfying experience of my life. I was with them when they were born, had to help a couple out that came out bum first, had to get one going that slipped out unnoticed by both me and mum and didn't immediately have the sac broken over his nose (he's now asleep by my chair.) As I was retired I spent all day every day with them and it was just incredible watching them grow from blind bundles of fluff to rowdy hooligans.
I can't recall Mum needing much extra looking after, we were out walking the afternoon before the birth, but she did have raw mince, oily fish and goats milk regularly in small amounts for a couple of weeks before her due date.
She did the majority of the looking after when they were born, all I did was to make sure all were getting a fair share of teat and that they were warm. I also handled them from the moment she would let me at every opportunity.
Weaning was simple - tiny pieces of raw mince, goats milk slightly diluted to start and then introducing 'mush' first by squashing up Weetabix with goats milk and later by grinding up dry puppy biscuits and mixing with warm water, slowly leaving them more and more coarse until they could handle the dry biscuit, all the time giving tiny raw mince meatballs and goats milk with less and less dilution.