Hi,
I would recommend if you can to go to a nappy library and see if you can hire a kit to try first. I bought a few nappies, they didn't work and almost gave up, after the library, I loved it as I found some that worked well. If you google it there should be one near you hopefully.
Also you can do a questionnaire on the nappy lady website which gives you an idea of what to go for, and if you have any questions you can email and she will get back to you....I didn't go with her recommendation as I didn't think the nappies were 'pretty' enough (!) and then tried one from the kit I hired and it worked perfectly!
There are various groups on Facebook to buy preloved and this will keep costs down, and also at the moment there is the 12 days of Christmas sales where different groups offer reductions e.g. Close did a flash sale the other day with 60% off, so you can pick up some good deals.
Generally pockets dry fast and are simple to use, but I've found they aren't necessarily the best fit for my little one, so worth trying to see, plus from newborn you may find it changes as to what suits your baby. I didn't start trying til mine was 6 months, so I'm a bit clueless with newborns in nappies!
There are lots of sites with lots of nappies to choose from so it can be a bit overwhelming, which is what I found, but start slowly and work up ans it's not as daunting.
You will need a few bits like a nappy bucket or wet bag to store dirty nappies, and one to take out with you, liners are helpful to protect the nappies and catch poo! I use flushable liners, but fleece are good too, plus it draws the moisture from babies skin.
Boosters are also helpful, and add extra absorbency to the nappy, such a bamboo.
Microfibre is the fastest to dry, followed by cotton, followed by bamboo.
Bit also with this bamboo lasts longer on a little one, then cotton, then microfibre.
I don't use them at night at the moment, so can't really help with that.
Hope that helps a bit?xx