As a VMware instructor, I spend a lot of time looking at resources and trying to find resources that will be useful to my delegates.
The VMware Product Walkthroughs are one of the resources I check quite a bit.
The site has resources for the majority of VMware products in a useful centralised location.
Examples of products include:
VMC on AWS
vSAN
NSX
vSphere
Definitely worth looking at if you find yourself with a few free minutes