[linuxlizard]

My 12-yo is learning HTML/JS by reading and modifying websites' code.

[jarin]

That is how I learned when I was 12 too :)

[lstamour]

Back then I didn't have developer tools though. That lowers the bar considerably to newcomers. :)

[err4nt]

I first got excited about web design when my computer teacher taught me how to change table cell background colors, in Netscape Composer. Now I do responsive CSS for a living!

[fysac]

I remember the endless amusement I had using Firebug to create ridiculous headlines on yahoo.com.