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Extend the selection to the last cell right

Windows shortcut 
CtrlShift
Mac shortcut 

If the active cell is empty, Excel will extend the selection to the first non-empty cell to the right. If the active cell is non-empty, Excel will extend the selection on the last non-empty cell to the right. On a Mac, the command key (⌘) can be used instead of the control key.

Related videos

The videos below demonstrate this shortcut.
This video shows how to use VLOOKUP to merge data in two tables based on a common ID. You can even use this technique to reorder the columns you retrieve.
In this lesson, we cover shortcuts you can use to extend selections.
In this video, we'll look at how to use conditional formatting to shade every other row in a table. This is sometimes called "zebra striping".
In this video, we'll use MATCH to find the position of an item in a table, and the INDEX function to retrieve the value at that position in a two-way lookup.
In this video, we'll look at how to use conditional formatting to highlight entire rows using multiple criteria.