"Be fruitful and multiply" - the first mitzvah in the Written Torah! The mitzvos and ceremonies attending and following the birth - bris, giving a name, pidyon haben - are among the most joyous occasions in the life cycle of the Jew.
This book is an anthology of the Chabad customs regarding childbirth, including pregnancy, childbirth, circumcision, Redemption of the Firstborn, and the birth of girls.
This site is most comprehensive.
A layman as well as a learned person can find material related to them.
Thank you for all your efforts