A general list of VMware sites which I use on a regular basis:

VMware Lifecycle Product Matrix

VMware Product Interoperability Matrices

VMware Compatibility Guide

VMware Configuration Maximums

VMware Downloads

VMware Knowledge Base

VMware vSphere Documentation

vSphere Central

VMware Storage Technical Documents

VMware vSAN Documentation

VMware Validated Design Documentation

VMware Validated Design (VVD) Bill of Materials

VMware Cloud Foundation Documentation

vRealize Suite Documentation

VMware vRealize Suite Lifecycle Manager Documentation

VMware Site Recovery Manager Documentation

vExpert Portal

VMware Communities