Rails 3.1 , jQuery, link_to to a partial without reloading page

In the index page i want to place a link (for registered users only)
that show's the User.all in a partial on a div without reloading the
whole page.
But since i don't know jquery... is there a code or a tutorial online?

I read that before it was possible with remote=> true but since rails
3.1 switched to jquery and added the assets directory i have no idea
how to do it.