Resources:
Data.com Prospector and Clean Retirement https://help.salesforce.com/articleView?err=1&id=000318293&type=1&mode=1
and How Do Data.com User Types, Licenses, and Record Addition Limits Work?
https://help.salesforce.com/articleView?err=1&id=sf.jigsaw_int_understanding...
In this lesson, I introduce you to the Salesforce Workbench.
Resource:
Workbench - https://workbench.developerforce.com/login.php