For a first doll I’d recommend something from Volks’ Dollfie Dream line because they’re high-quality, there are lots of clothes made for them by many different sellers, and the price isn’t bad. Their character dolls are often the big draw card but those can be very difficult to get by lottery or war, even if you’re in Japan. Their standard doll line has one girl for each body class and they’re pretty cute. My first was a standard Miko, who isn’t made any more. Some bottom-feeders might recommend Smart “QC defects are totally wabi-sabi, goy” Doll but I find that they’re just not very good-looking in comparison and the quality doesn’t anywhere near justify the price, plus Danny Choo and his antics leave a foul taste over the whole thing. Obitsu 50cm dolls like the VMF50 line or Angel Philia are a little more niche, take more care, there’s not as much info out there, and clothes can be quite scarce, but can be very nice.
I’m sure /doll/ would be able to help you more if you want to ask them.