Some soap: Everything you've seen or read about sex is false. It is an (growing) experience between the ones who have sex which can not be learned from a book or video.
I disagree. You can always better yourself in everything. Learning from books, videos and other sources works in every other field, why should it not in sex?
Its the same as with everthing else on the internet (and of the internet for that matter) you have to always think critically, even if the content is wrong you can still learn. If you listen to Fox News for example you can learn alot about what technics the media uses, because Fox uses them totally obviously.
I'm sure it doesn't apply to you but that sounds like it was written by someone who never really had sex all that often. "The Joy of Sex" became so popular (in an era in which sex was widely seen as a leisure pursuit and before the scares over HIV) because many people actually did need to be told what to do. It concentrated on the emotional as well as the physical aspects.
Poor analogy time: owning a car does not make you an instinctive driver, suggesting you just keep taking it round the block until you figure it out is the kind of thing that only a non-driver would say.
GP's point is that the best advice on how to please someone comes from that person, no book can give complete insight into the way their body works.
To torture your analogy some more, imagine a car capable of explaining to you how to drive/maintain it perfectly. Like a less whiny KITT. Would it not make sense to ask the car rather than to pore over generic car manuals?
Centuries of everything from sensual, artful to downright obscene and even religious pornography, guidelines, texts and other scriptures, statues, china and other works of art beg to differ.
Oh please just remove this link... eric is negatively legendary for obscenely proposing to pretty much any and all females wherever he shows up as if he was a combination of Appollo and Pan and god's gift to women.
http://catb.org/~esr/writings/sextips/