It's about 3 or 4 years old now, but a while back I was asked to teach a workshop on light painting and I made up a little presentation with several example photos and pictures of some of my tools. Obviously it would have been more informative with my accompanying dialogue, but there are a few pointers in there, if you're interested. It's still on my website at:
http://www.tohella...LIGHT_PAINTING.pdf Let me know what you think and if you have any specific questions or would like me to elaborate on anything, just ask.
The most important piece of advice I can offer is to practice, practice, practice. I remember some participants at the workshop asking me why I'd give away my secrets. My answer was twofold - firstly, I didnt invent any of these techniques and they're all readily available on the internet. Secondly, knowing HOW to do something is much different than actually DOING it yourself. It's taken me many years and many thousands of shitty pictures to get where I am, and I'll never stop learning or practicing. You never know it all, and the only way to continue advancing your knowledge is through continuous practice.