HandsomeRyan:
Any tips, hints, words of encouragement,
Tonnes of encouragement - sounds very sensible. Arduinos are great fun. I suggest you explore stuff that interests you now. The details your kids will be dealing with in a few years time will be very different but you will have acquired a useful "literacy" from your own "playing".
My learning from my 4 kids (two are now middle aged men) is that if they find something they are interested in it is hard to stop them. Conversely, if they are not interested it is very hard to get them interested. IMHO the trick is to be a facilitator rather than an obstacle.
When my youngest was about 12 (almost 20 years ago - seems like yesterday) he was giving IT advice to his friends that I never taught him. And I'm not saying that because I think he is exceptionally bright - it was just something that interested him at the time.
I don't think you can plan kids' futures. I would never in a million years have imagined that one of my sons would become a chef or that 3 of the 4 would emigrate.
...R
PS ... don't discourage your kids from the dirty-fingernail stuff if that's what they like.