Hi,
I give cloth nappy advice. It really does depend on your circumstances.
e.g. Do you have a tumble drier? If not it will take quite a long time for bamboo & hemp nappies to dry if the weather is bad, so you would want to plan with that in mind (make sure you have enough nappies, have some quick drying ones for emergencies etc.)
For nights it's often sufficient to use the normal nappies, you can add a booster to increase the absorbency.
There are Birth to Potty nappies, though they can often look complicated and don't always give the best fit.
I find a fitted (shaped) nappy with a separate waterproof wrap to be most reliable, but you would need to buy different sizes as your baby grows.
One thing I recommend is using terry squares or muslins for the first couple of months (they are a cheaper option and you can use nappy nippas to secure them) with a decent wrap such as a Motherease Rikki or Airflow.
After that stage it may be possible to use a size 2 nappy with the front turned over and secure it with a nippa. The Bambinex ones are good for this.
How many you buy will depend on how often you wash and what drying facilities you have.
Hope that answers some of your questions. It all seems a bit confusing at first but you will get the hang of all the terms and then end up obsessed like the rest of us
If you can, get a local advisor to give you a free home demo.
If you want to see all the different nappy terms explained you can have a look at my info site www.leedsrealnappies.org on the FAQ page. It's meant for Leeds residents but anyone can use the info!