These work much the same as Excel spreadsheets and have many of the same features.
They are great for:
To access and create Google Spreadsheets:
1) Go to drive.google.com.
2) Log in with your Butler e-mail address and password.
3) Click the "Create" button and select "Spreadsheet".
4) Rename your new "Untitled spreadsheet" by clicking on the title.
By using the googleclock() function, you can make sure the current time/date it updated not only every time someone edits the spreadsheet, but also every time someone views it.
This function allows you to highlight specific information quickly with text color or cell background color. By right clicking on a cell or a column and selecting the "Conditional formatting..." option, you can make rules for highlighting values that are greater than, less than, or in between the desired values.
Pictures and information from Perform Amazing Feats With These Useful Google Spreadsheets Functions.