Nappy lady is the way forward for advice, you tube has nappy lady demos for all diff types of nappies (who they suit, how to assemble and change).
Many washable nappy sites give advice also.
The nappy lady use to hold 'napachinos' (basically a demo/talk/myth dispeller) not sure if they still do.
You will always find that you occasionally use disposables (sickness, hols) and there are some nappies now combining washable and disposable systems.
I've got a handful of bumgenius flips which take cloth and disposable inners.
Mumsnet has cloth nappy threads full of total nappy obsessives who gave me fab advice and help with trouble shooting.
I would research what you think you like the sound of (cost, material, etc) and then look around for deals and ebay etc, they even come up on freecycle.
Dont fear the second hand nappy, they are usually great for absorbancy, often being sold on by people who tried and didnt get on with them so barely used) and cheap.
Go for a couple of different nappies to see what works for you.
In the early days you will be too busy to take on too much extra workload so disposables will be relied on but by 5-10 weeks you may find your weaning yourself on to washables.
With a newborn this can be 8-12 nappies a day! But as they grow that changes.
And when you find yourself sat in Costas covered from waist to knee in orange shit please bare in mind this occurs in washable and disposable alike due to the explosive nature of newborn poos.
sorry that was a little long but its a quiet night on here and it seems that .....yes.... I actually am one of the obsessives.....