Plugin tour help tips

Can anyone point me to a tutorial on how to add the “tour” tool tip that some plugin authors are using? I’m referring to the tooltip looking speech bubbles that appear after a plugin is installed to guide the user the process of configuring the newly activated plugin. See https://www.dropbox.com/s/f44ryk444yjs4od/wp-tour.jpg for a screen shot of what I am referring to.

Thanks,

Chad