If you're new to modern cloth nappies, or considering using cloth, feel free to ask questions and discuss things in here! Thanks for this mods!
ETA: Argh! I'd linked to a sticky about different types of nappies, but the sticky's gone - Post #13 roughly covers Fitteds, Pockets & AIO's.
To answer your questions Katie. Prefolds
I started River as a newborn with pre-folds and covers. I love them, the new bub will have these too! We had flats, but I was a real unco at getting them on, prefolds were a breeze! (In my homepage, which you can link to from my user name, there's a pic on how to use prefolds. Also one on how fleece can work.)
Prefolds are cheap, and being flat (though with layers), they dry pretty quickly, and also wash pretty well.
I used to drypail my prefolds (that is, in the bucket, no soaking, then straight in the machine) even with nb poop, unless it was solid for some reason - many people do this, we underestimate what washing machines can do these days! If you weren't comfortable with that, you could rinse the nappy, or soak it, but I just kept things as simple as possible in those early days, and we had no stains or machine dramas.
I use unbleached cotton prefolds (that I've gotten from Nurture Nappies and The Wee Wuns) in infant size.
You could use fitted nappies for a newborn, they're very cute, but they'll take longer to dry, and you can't use then as spit rags, vomit cleaners, makeshift bibs, etc later on!
Other newborn nappies.
I would recommend mostly using fitteds/prefolds with covers for the early stages, we call it the 'two lines of defence' against explosive poos. A poo might leak past the nappy, but if the cover fits well, that should contain it!
Of course, there are exceptions, and there are Pockets and AIO's that people find to be very reliable for their nb (BumGenius pockets for us), but it is all trial and error for each baby - you need to find a nappy that has a snug fit to contain any poo well.
Umm...I think I answered your question about where to start...I would say flats (prefolds are in this category) and fitteds with a cover for the early days.
Nappies once they're on solids
When River started on solids at 6 months, his poop changed to solid too, and then we started to use mostly pockets and AIO's, for ease of use. After bub starts on solids, you become less concerned with 'pootainment' and more with ease of use, absorbency, cuteness! Stuff like that.
Liners
We didn't really use cloth liners with Riv as a newborn, because the moment they poo, you change them, and he didn't have a prob with nappy rash for wees. I wouldn't bother with a liner just for the purpose of containing nb poo, I'm sure some people do, but I'd feel a bit like it was fighting a losing battle!
Flushable liners might make the cleanup a bit easier...haven't tried that with nb poo yet!
According to law, you should get as much poo in the loo as possible, but it's not really do-able with liquid nb poo. If you scrub at a sink, it goes the same place as if you just chucked it in the machine with a pre-rinse!
(I'm sure others have stories of how they dealt with nb poo, so you can pick and choose which way you want to do it!)
When the poop becomes solid, yeah a liner's great for flicking it into the loo. Flushable liners are great for sticky poos! We use micro-fleece liners, or flushable.
How many to get? For prefolds for part time use I'd say go a dozen. For nb fitteds, a bit less (because they're more pricey). And a couple of covers (covers with gussets like Tots Bots, Motherease Rikki, Imse Vimse and ...there's others). Ease yourself in, aiming to not have to buy any more sposie when they run out or something!
OHHHH What a ramble! I think I answered all your questions though! Post again if you're still confused, and I'm sure someone (maybe me again!) will be able to help you out!