Hello huang, Hopefully, the resources we’ve sent have helped you hit the ground running. If you have any questions or feedback we’ll be happy to help. We have free V-Ray for SketchUp courseware available online. It will help you get ahead with V-Ray tips and tricks. You could also take advantage of the free scenes that will give you a head start learning V-Ray for SketchUp. Each scene includes complete assets and renders. Finally, here is a webinar recording which covers all essential steps and best practices for creating a V-Ray for SketchUp project from scratch.Thanks for taking the time to try our product. Best regards,Chaos Group Trials