I hope I can help. I have been using reusable nappies for nearly a year. I got a trial kit from my local nappy shop (I live in Ipswich) which had about 20 different types of nappy. I had it for a month and was able to see which one I liked best. I went for bamboo, shaped nappies and I love them. If you don't have anywhere you can get a trial kit from near you you could try and look online.
Here are the things I think you need (some of these things will be subjective but this is what works for me)
Bucket with a lid ( I dry pail - keep nappies in bucket without soaking until a wash them)
Nappies (How many? - It depends on how many nappies you use in a day and how often you want to wash them. I personally have 9 nappies and I wash them every other day or so)
Paper liner - these sit inside the nappy to catch the poo and keep wet away from baby's bottom. Pooey (sp?) ones go down the toilet and I wash ones which are only wet and use them again.
Plastic wraps (How many? - I use 1 per day, unless i gets soiled. I have 4 of these)
Washing powder (I use non-bio powder, no fabric softener (this effects absorbancy and napisan and wash at 30c (napisan kills germs and 30c is more environmentally friendly)
I line dry my nappies, outside if possible as the sun bleaches the nappies
I breastfed my son, now 16 months, until he was one and I actually found, and still find, that reusables don't leak as much as disposables. I also find they don't smell as bad as disposables. We do still keep a packet of disposables in case his nappies haven't dried in time etc but I hardly use them. I think I have probably spent nearly £100 but all I buy now are paper liners (£3 every 2 months or so) and I will use the nappies for any future children I have so I think i have saved quite a lot of money. I can honestly say that it isn't a hassle to use real nappies. I work 3 days per week and can still make it work. The nappies are quick and easy to put on (as easy as can be with wriggly baby!!) and although they can smell quite bad by the time they go in the wash the lidded bucket keeps the smell in (you can use tea-tree oil to help with this)
I would encourage you to give it a go and remember we are here if you need to ask anything.
Sorry its so long! Good luck
Anna