Answer:
in simplest terms, do lots of research in general. learn about what to expect, and how to take care of one. it would be best to purchase necessary items like diapers, clothes, and things like that.
there's a lot more things that could be said, but i probably can't fit everything on here, and i doubt you'd want to read paragraphs upon paragraphs of text. even so, there are several guides with very good advice online. tbh they could probably word it better than i can.