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VMware Certified Professional on vSphere 4 Blueprint (VMware)
VMware vSphere: Install, Configure, Manage (VMware)
The VMware vSphere 4: What’s New Course (NT Pro.nl)
VMware Certified Professional on vSphere 4 (NT Pro.nl)
VMware vSphere 4: Install, Configure, Manage (Musings of Rodos)
VCP on vSphere 4 (VMware Training)
VMware vSphere Certification Program (Punching Clouds)
New VMware Education Roadmap for vSphere 4 (Punching Clouds)
VCP4 Beta Exam - Complete! (VMware Tips)
VCP vSphere 4 Practice Exam (The SLOG)
VCP4 vSphere Study Notes (The SLOG)
VCP on vSphere 4 Blueprint (VMware)
VCP4 Exam (Virtualization Evangelist)
VMware certification options: VCP, VCDX (SearchVMware.com)
VMware VCDX Qualification Review (VMware)
VCDX: VMware Certified Design Expert forum on VMTN (VMware)
Are you studying for the VCDX Enterprise Admin Exam? (Virtual Insanity)
VCDX Admin Exam Notes - Section 1.1 (Virtual Insanity)
VCDX Admin Exam Notes - Section 1.2 (Virtual Insanity)
VCDX Admin Exam Notes - Section 1.3 (Virtual Insanity)
VCDX Admin Exam Notes - Section 1.4 (Virtual Insanity)
VCDX Enterprise Exam prep material (Yellow Bricks)
VCDX Tips from VCDX 001 John Arrasjid (Yellow Bricks)
VCDX Design Exam, how to prepare? (Yellow Bricks)
VCDX Defense, the blog article! (Yellow Bricks)
VCDX Defense Panels (Yellow Bricks)
My VMware VCDX Defense Experience (VMware Tips)
On Becoming a VMware Certified Design Expert (VCDX) (InformIT)
VCDX Enterprise Administration Exam (Virtualization Evangelist)
VMware Enterprise Administration Exam study guide 3.5 (Peter van den Bosch)
VMware Enterprise Administration Exam Blueprint v3.5 (VMware)