The Mac has many useful keyboard shortcuts but these do depend on you knowing the difference between the following keys:

Shift

Fn

Ctrl

Alt (Also referred to as Option)

Command (Also referred to as the “Apple Key”)

1.  Startup Options

When starting up the Mac, you can get to certain special functions.

Note:  These are best left to those with technical knowledge beyond basic users.

2.  Main Keyboard Shortcuts

3.  Special Accented Letters

4.  Finder Shortcuts

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thefreemac ultimate mac shortcut guide