TomTom one update?

I Got my First TomTom for Xmas and now i need to use it. I want to just update it on the computer. I think when i looked at it Xmas day the instructions went out with the Xmas wrapping paper.
So What's the procedure. I have plugged it in to the computer and it asked if i wanted to connect to it. I pressed Yes.
I now am on the TomTOm website and can't see a update anywhere.

What's the procedure now?

Thanks for the help

TT

Have you downloaded the TomTom Home from the web? Is it a Rider (I)?