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How to use Google Sheets: The Complete Beginner's Guide
How To Use Excel: A Beginner’s Guide To Getting Started
The Beginner's Guide to Google Sheets - How-To Geek
Beginning Excel 2019 - Open Textbook Library
Free Google Sheets Tutorial at GCFGlobal
Excel Crash Course: Learn Excel in Just 30 Minutes (Free)
Excel for Beginners - My Online Training Hub