Hi Scott!
I imagine you already found the SAS® Visual Investigator area of our website, which has a glossy demo video, and a 'Free Trial' link, which takes you to a form asking for some contact details in order to let you have a play with it yourself.
The documentation for SAS Visual Investigator 10.4 on the support.sas.com website is also good, if you are able to access it. I see a little padlock icon next to the documentation link on that page, and I think you need a password to access it. Perhaps someone can reply here to advise a better way to get the password - I don't think I'm supposed to share it here - but in your SAS account manager should be happy to help.
When I got started with Visual Investigator 18 months or so ago, as a general SAS 9 and SAS Viya administration person with no previous experience of network analysis or the other application domains this product is used for, my experience was that I had to read quite a lot and get my hands on it the product for a while before I really began feeling like I understood what it was all about. It so happens that I ended up working on other things all this year, I haven't really done anything to speak of with this latest version. But I'll pass this conversation on to some colleagues and ask them to add anything they can think of!
Good luck - it's a really neat product!
David