Take a look at the video David Henry of Learn Stage Lighting made to introduce lasers to beginners! Featuring safety and legal compliance, an explanation of how to use the laser, and a demonstration. Curious? Click the link below to watch his video.
Other useful links:
LearnStageLighting YouTube: https://www.youtube.com/channel/UC1waxWgPLQJv7UVBe9dr5cg