It took just about a year. Which shows I need more consistency with my blog (should have been about 1 month). I finally finished a brief explanation of each esxcfg command. My little self study for the VCDX, this is in no way exhaustive.
Make sure to check out other great resources out there:
Simon Long
Harley Stagner
Both good places to start.
Hopefully my VCDX compilation page can help.