My DS couldn't managed to pull the DVD out of the box (you know how the centre needs to be pressed in first?) at that age, but he could turn the DVD on and set his nursery rhyme dvd to play. Even knew how to press the back button to get a tune to play again.
I remember one day my mum said, 'it looks like he's asking for this dvd, how do I put it on?'
and I replied, 'I've got no idea but he knows,' and just told DS to go do it himself.
I think on the whole they learn just about anything they see other people do (I am constantly amazed by what DS can do or what he knows), although of course getting their fav dvd on is a good motivation to learn something. Pretty smart that your DS already knows how to get the dvd into the machine
