A nice quick video from Fine Homebuilding on how to measure and mark the plates for an accurate and solid wall layout.
http://www.finehomebuilding.com/item/12720/building-skills-wall-framing-layout
(http://images.taunton.com/enewsletters/fh/wall-stud-layout-eletter.jpg) (http://www.finehomebuilding.com/item/12720/building-skills-wall-framing-layout)
They have updated the site with lots more stuff to drool over 8)