It'd come down to computer use, for me.
I've got top-notch parents, the envy of fiance and friends alike. For the most part I fully agree with people on this, but there's one particular topic I'd probably shift from my parents' model of parenting (and it involves the device you're sitting in front of now). Phones and computers are such an integral part of our lives now, in a way that they weren't back when I was growing up (yes hi I am part of the last generation that didn't have their whole lives documented and tracked by tech giants, you may now envy me). Computers (and it was just computers) were these strange, esoteric devices that could do shit, but neither my sister or I were entirely sure how the shit was done. My folks were also pretty distrustful of these new time-sponges and their offshoots, the dreaded games console. As such, my mother and father were more encouraging of other hobbies than they were of things that involved machines.
Looking back, I feel like this maybe wasn't the best approach (though far from the worst). A knowledge of computing and, more importantly, a knowledge of what makes them tick, would have been extremely useful skills to try and foster in children.
Moral of the story here is this: teach your kids that computers and the web are machines.
Applied properly, they lead to incredible things. Video games that take us to new worlds and experiences. Connections with like-minded people who might be a world away but you feel a closer connection with than you do with most people in your everyday life. IT education is better today than it was at it's peak when I was at school: children now have an opportunity to learn how these machines work in a way we just didn't when I was a kid, and we should teach our children to make the most of that.
But, as with many machines, they have their dangers. I worry that my contemporaries who are parents don't consider this enough.
My dearest hope is that any children I might raise are sceptical of the claims of social media, and have a good understanding of the information they put out there online (and how it can be exploited). The further down the tech revolution we get the more the darkest predictions of cyberpunk writers like William Gibson and Neal Stephenson seem to come true. I want to help raise a generation of Cases and Molly Millions, of Hiros and YTs: people who are aware of the potential of technology, but also know how to evade it's pitfalls.