the cd-rom is some what hard to navigate, but not impossible. i began looking at the interior portions so i can do the tech12volt install with ease... i had to do a bit of jumping around to find the pages i needed and printed them as i went so i can take them to the garage and have all my reference materials at hand.. having a chilton manual sure made it a little easier but i also like zooming in on the diagrams in the manual... if i only had a lap top!