Okay I admit it... I plan to tackle the task of scribing all the tile lines into my 1/72 shuttle kit. I origninally bought the Monogram full stack, but decided the Revell kit was better detailed for that scale. After buying the kit I was rather disapointed with the tile details and decided to make my own...
The technique I found that works for scribing is to use sections of that labling tape that you can buy at the grocery store. You know the kind that you feed in that gun looking thing with the rotary head covered in letters. Anyway, that tape is rather thick and doesn't stick too tightly to the plastic. So I use its thick edge as a guid for my X-acto blade (of course brand new blades only). I have been sketching the tile lines in pencil first so I can avoid starting at one end and ending up totaly off on the other.
As for resourses I have the Walk Around, but it doesn't compare to some of the books you can get at Barnes & Nobel or other book stores. My favorite is "Space Shuttle: The History of the National Space Transportation System: The first 100 missions" by Dennis R Jenkins. It has more detail about the shuttle than most people could stand.. but I am an engineer and I love that stuff.