I would recommend that you first take a look at:
The VFX Learning Sample.
Which is a collection of VFX that were built to help you understand the different aspects of VFX Graph.
You can also take a look at the updated VFX Graph E-Book, which is a great resource to get started and explore VFX Graph.
When a little more familiar with VFX Graph, you can take a look at this GitHub repository, which is full of VFX Graph examples.
One of the example’s scene is a Hollow table like the one you’re trying to achieve:
You can find a recording of a GDC presentation that covers the hollow table VFX:
The Hollow table VFX breakdown starts around 30 min.
I hope this will help you to achieve what you’re looking for.