I want to create ball jointed dolls; can someone give me info on materials + process?

I’ve been doing some searching online and have found some info but not enough. I’m trying to decide on a specific material and process for making ball jointed dolls. please be as detailed as u can (e.g. kiln and material type)

1: what specific ceramics/resins/polyurethanes/epoxies could I consider to use? (which are the best quality (and also some other good quality but more affordable options?)?

2: how many steps are involved when comparing plastic and ceramic material? (and what are those steps)

3: which kiln can fire the doll parts and the china paint? Or which mold rubber/supplies would be good to use?

4: I’m totally new to this, any other important information/tips would be much appreciated (e.g. good books etc)! Thanks!