I'm currently reading Neuromancer by William Gibson. It's definitely not a kid's book, and it has some unfortunately graphic use of drugs and sex, but at the same time...it's the grandfather of cyberpunk. At the very least, it's worth reading to experience the prototypical cyberpunk novel at least once. If you want to write cyberpunk, then I strongly recommend this novel. Otherwise, I won't feel bad if you chose to skip it for content reasons.