Tangentair -
For Navigation Lights basic information and pictures, I recommend going direct to "the source" - in this case the Coast Guard rules book. It is Commandant of the Coast Guard Instruction M16672.2D. You can buy the book at West Marine or Amazon, but the Coast Guard also provides it free online for download in .pdf format, here is the link:
http://www.navcen.uscg.gov/mwv/navrules/download.htm
You want section "C" for the lights and shapes rules, that is where the pictures are. But I also strongly feel that all of us on the water should be familiar with rules 1 through 37.
There is also a nifty little piece of freeware called "NavRules" available at the following link, however it does not appear to have been updated in quite some time as it cites version C of the rules (the current version is D). However, the changes between versions C and D do not have much effect on the basics of lights and shapes, except that a fishing vessel can no longer use a basket hanging from the yardarm as a dayshape for "I am fishing". It also cites Windows 95 as the required operating system. Still, if you get it to run it has good pictures and you can run a "quiz" where it shows the lights at night and then asks what boat it is.
http://www.navrules.com/index.html
I've got years of experience with these rules, including teaching them, so feel free to send me any questions.
- Andy