Scream I agree with dream. Books on parenting are very focused on only one point of view depending on the author and these point of views range from one extreme to the other.
We were in a routine (of sorts) by approx 3 months. It was not strict or forced, but in terms of feeding and sleeping it was pretty much the same every day and worked for us. I did read Gina Ford's Contented Baby (bought before doing any research on her views) and ignored everything apart from the feeding at 7am, 11am, 3pm, 7pm, 11pm which we found worked really well.
I did have 1 book which I thoroughly recommend. It was not a parenting book but it was a month by month guide of what to expect covering feeding, sleeping, development stages, how to spot growth spurts, vaccinations, health, first aid and lots of helpful, factual information. It was called "What To Expect The First Year" by Arlene Eisenberg, Heidi E. Murkoff and Sandee E Hathaway.
Your maternal instincts will kick in. I felt much the same as you and was 100% clueless regarding looking after a child. I did find though that I didn't really start following my instincts properly until DH went back to work and I was alone with DS for the first time. The 3 weeks before that we were both a bit WTF? But we all survived and so will you.