Before getting started with Borealis, you may want to test out the Borealis Demo. You can see what the submission process looks like before publishing in the actual version of Borealis.
Create an account using single sign-on. You can test out the service by creating your own Dataverse, or adding data to the demo University of Lethbridge Dataverse. Do not deposit your real data here, as the demo site is for testing and demonstration purposes!