Here are the collection of laser machinery application, you can find user guide, how to operate a laser machine, different machine working videos.
The unboxing of his new 50 Watt CO2 Chinese Laser Cutter/Engraver. It is a generic brand, generally found on eBay. Looks like he got lucky and was shipped a version with the motorized lift!
By far the most informative video on laser cutting that I have seen - and I have seen lots! Anyone who has a laser cutter or is thinking about getting one should see this!
If you watch the part 2 video you will see that some plastics produce dangerous fumes. Please do some careful research if you plan to cut anything more than acrylic.