Data:  Learn to automate tasks using things like Conditional Formatting, and Quick Analysis to see Charts. Find and remove duplicates.  Working with format tables, sort, filter and slicers.  

  Automation:  Learn to maximize your efficiencies using Slicers, Flashfill, AutoSum, and Printing.

  Spreadsheet Skills:  Learn to convert Text to Columns and all the options when you Paste Special.  Discover how to customize your Header/Footer with page numbers, dates, insert sheet name/filenames and even insert pictures or logos.

  Sorting:  Learn different approaches to sorting all that data using Advanced or Custom List.  Filter text or numbers and learn how to Remove Duplicates.

  Customizations:  Learn about your Ribbon, Quick Access Toolbar, and your View Settings.

  Compile the Data:  Learn an easier way to cross reference your data using VLookup, or you want to limit the type of data that can be entered in the cell using Data Validation, or you need to always see the top row as you scroll down using Freeze Panes.