Using this video is - unfortunately - not going to work well for getting started Rendering and adding Materials in Rhino for Mac. In fact, no video is appropriate at the moment. The reason is that the Rendering and Materials User-Interface is undergoing some major changes. This has been a huge area of effort in the prep for initial commercial release. We really want to get these changes in front of users as soon as we can…in the meantime, please understand this is why we are hesitant to create guides to a process that is already outdated.