For those looking for a free online resource from 2020, here are some suggestions:
It connects to over 100 data sources, including Excel workbooks, SQL Server, Google Analytics, Salesforce, and Azure SQL databases. For those looking for a free online resource
This entire project costs $0 and provides a portfolio-ready artifact. The 2020 edition’s genius was packaging these steps into a 2-hour self-paced module. including Excel workbooks