I like how some of the comments here completely ignore who Pieter Levels is. "Some blogger", LOL. I suggest you check out what he's created before simply poo-poing his advice.

Regarding said advice, here's my take; his post is about exactly what the title said - what HE would do if HE was 18 right now.

From my reading of him, he's an extremely independent, entrepreneurial-type who would not be interested in being employed by others(hence him suggesting you skip college). You need a fancy degree to get fancy corporate jobs, not to start lifestyle businesses.

Regarding learning how to code as soon as possible - I think that's good advice for most people who want to make things. Sure, you won't get that job at FB or Dropbox, but I have a feeling Pieter knows himself well enough to not even consider those as options.

Building an income. Yes, simply "producing" a business making $5K pm is, shall we say... optimistic. But it's still good advice for independent-minded people. It's a target to reach for. A prompt to at least attempt that goal. It's better advice than "get an unpaid intern position for a year."

Move and travel. That's easier for young people from rich countries, which, well, would apply to an 18 year old Pieter too. If I had been young and unattached with a currency advantage like that, yeah, I'd be out traveling too! Life experiences can teach you a lot about yourself.

Save and invest. Solid advice. You may disagree with his assumptions and math, but how many 18-year-olds even think of saving and investing money, never mind the amounts he suggests?

Follow your passions. Yeah, that's a bit pie-in-the-sky for me too, but to his credit, he does say that that would follow after you've accomplished his earlier advice(Build a business with a lot of income, ect.)

I enjoyed his post. And I suspect you'd enjoy it more too if you took the time to know more about the man who wrote it.