Nappy library is a good idea or buy one of a couple of types of nappy and then when baby is here use them and see how you get on with them.
You can pick up second hand cloth nappies on facebook groups or if you want to buy new and they dont work you can easily sell them on as there is a big second hand market for them.
There are a number of types of nappies. All in ones are the easiest as everything is fixed together and they go on and off like disposables.
Pocket nappies have pockets which you insert the boosters in eg. bamboo, hemp etc. They require a bit more work as you have to put the boosters in the pocket after each wash, but they are customisable so you can add more or less boosters as your child gets older.
I use tots bots bamboozles with a motherease wrap at night, they are really thick with amazing containement but I would only use whilst the baby is sleeping as they are too bulky for the day.
Disposable liners go between the nappy and your babies skin to catch poop. I didnt use them until weaning as I breast fed and the poop dissolves very easily.
I didn't use little lambs but i picked up a bambino mio recently and its ok but I didn't love it. The insert is attached to the nappy which makes it easy to use, but there is a lot of insert so it can be really bulky on smaller babies. I use it as a wash day nappy when my favourites are in the wash.
Definitely do not buy a massive kit full of the same nappy, try different ones to see what suits your child and your lifestyle.
Also do the nappy lady survey she will recommend some for you, again dont buy everything she recommends but use it as a starting point to buy a couple to try.
Newborns get through a ton of nappies so you will probably need disposables as well whilst you get started.