R.A.
I'm a big fan of What to Expect When You're Expecting. I lent my copy to one of my friends due in November. I bought another copy for my other friend due next year.
I had another book at first from Babycenter. But it was quite boring actually. I felt like I was reading a textbook. What to Expect When You're Expecting was a much more enjoyable read. I like how it lists out the questions that you might have month by month. It was a life saver for me while I was pregnant...so many questions. And I always found my answer in the book.