Hi, please visit https://community.aviatrix.com/t/g9hx9jh/ for more info on the Aviatrix Sandbox Starter Tool.
Hey Praveenkumar! Congrats on the ACE certification!
If you're after more structure around using the sandbox starter toolkit, and further your Aviatrix certification journey, I'd suggest taking a look at the Infrastructure-as-Code course/cert. This will get you working with that sandbox starter environment, as well as introduce you to the powerful automation capabilities of Aviatrix by leveraging Terraform.
Currently, the cost is around $10USD (using the discount code ACEINFRASTRUCTURE) and is self-paced. I feel it would be a great next step in your Aviatrix certification journey while giving you that guided hands-on experience it seems you're after.
Good luck with your training!