Technical documentation can be found on the official website of ExtraHop. The ExtraHop blog will be a great place for tech people to have a look:
https://www.extrahop.com/company/blog/
If you want to know how to deploy ExtraHop appliances then this blog with “how to video’s” is great :
Take the opportunity to look at real data and test drive the product online yourself. You will only need to register (real or fake info) and after that you will get a link that will work for you for ever You can take a guided tour or roam freely through the product:.