This is very, very true. In my opinion no book can 'teach' you about parenting - it only comes with experience and relying on your instincts and basic common sense. I have 3 children and each of them is vastly different, what works for one doesn't work for the other and that's regarding everything - food, discipline, teaching...the works. There are books out there that can guide you step-by-step through things such as how to bath a baby (but your baby may like being held in a particular way that's not shown in the book as they only show a 'standard' way), how to feed a baby (again, will show you one way and nearly all babies have a way/position they like being held while being fed) etc etc.
Cook books - if you're a total novice to cooking, you could do worse than getting Delia's How To...books which do teach you the basics. Jamie Oliver books are good too I think - very often he has quite a lot of basic recipes that can be built on and tweaked (some of his books, he's written the recipes specifically for that). As a previous person said too, The Hairy Bikers are very good too.
Cleaning/home - there is a book that covers 'how to clean everything' and I can't remember if that's the actual name or not so I'm going to go off and see if I can find it for you.