The Baby Book is and excellent source for new parents. It covers just about every aspect you will need to know about from birth to 2 years of age. Our daughter is now 16 months old, and I still refer to this book (which we got when she was born). It has saved us a few trips to the paediatrician, and helped us on many occasion. The only part I found a little out-dated/ disagreed with, is the part about the "first foods/purees", bit this is a small part, and quite honestly, a personal opinion. Do yourself a favour and get this book, it is well worth the money spent. It also helped us get some good sleep. But if you need more info, I would highly recommend the others Sears books as well, like the Baby Sleep book and the Portable Paediatrician.
Dr Sears and his wife have 7 (or 8, I lose count, sorry) kids of their own, and have many insights to share, however, they do not impose their opinion on you - you are presented with the facts and ideas, and are open to try your own parenting style and listen to your own instincts. The writing style is in a light-hearted manner, and quite enjoyable to read.
Brilliant book! I am about to buy a copy for a friend of mine having a baby soon.