If you are interested in pursuing the VMware Certified Design Expert - Datacenter Virtualization (VCDX-DV) certification attending a VCDX Bootcamp can be a helpful part of your preparation process.
These bootcamps are delivered around the world by VCDXs who want to see you succeed. The presentation goes through the entire VCDX Certification process from the application to the day of your defense. It reviews what the panel is looking for when reviewing your submission, and walks through sample design and troubleshooting scenarios.
But, if you can't make it to a bootcamp in person, the presentation is available for download in the resources section of the VCDX program page at www.vmware.com/go/vcdx