Good morning.
Is there a way to import a test store that is already setup and ready to use? I am looking to simply test a few extensions and am completely new to Magento. Any advice would be greatly appreciated.
There are some Magento 1/2 ready-to-use AMI available on AWS Marketplace, you can try one of those and have a working site up and running in a few minutes.
That should help you to install the Sample Data
https://devdocs.magento.com/guides/v2.2/install-gde/install/sample-data-after-magento.html