Neeru,
NO doubt you are in a right place to clear all your queries. Certanily, every woman need to know about all these, as this is one of the rebirting phases in life. Well, to answer all your queries, it takes some time. You please go through various threads or posts in Labour & Delivery subforum, so that you will get ample knowledge. There are certain websites also which will give you enough information on the same. Eg:
Childbirth Process Understanding the Natural Process of Childbirth