We are in the process of a rewrite of our documentation and training materials so, yes, this video link has changed. The following is a video produced by a reseller of LightBurn covering the Materials Library. The video was produced a while ago so may not cover everything, nor be as up to date as we’d like, but we are working to provide these updated learning resources as fast as possible.
I also suggest you take a look at the LightBurn YouTube channel where we offer additional training and demonstration materials.