If you are in London check out 'Real nappies for London'. They do free info sessions to explain it all and let you see examples. Many London boroughs have a voucher scheme where you can buy a few new nappies using the voucher to try out.
In other locations (and also in London) there should be a nappy library that you can get info from and possibly rent reusable nappies. (Haven't done this myself, but I have heard about them.)
I found the nappy gurus website to be helpful, with lots of you tube content reviewing the different types, and they will give you personalised recommendations if you fill out the questionnaire.
I will admit I only used reusables part time for a few months once my DS was big enough to fit into the regular adjustable nappies (with all the poppers to adjust the size/fit), up until part way thru starting solid food. (A 3-week trip to visit family abroad interrupted my use of them. Then he had a few times with nappy rash and you aren't supposed to use washables while using nappy rash cream. And now he's often so fussy during nap changes (rolling over and trying to crawl away), I'm not sure I could manage the ones with poppers, which can be fiddly to get the fit right.)
I'm currently pregnant with my second, so I would like to use the washables I have for him/her, even if I don't pick them back up for my first.
I have some 'all in ones' with Velcro fastenings (brands including tots bots and tickle tots and bambino mio) that I liked. I also liked the pocket nappies with popper closures, such as from little lamb and Alva baby. Those tended to fit my little one better and dry faster than some other brands that I tried. Both of these types are shaped similar to disposables.