Gmail is one of the most popular Webmail, most of us prefere it for its suparior performances in spam filtering and security. You can save time and eliminate the need for that pesky mouse by knowing keyboard shortcuts for Gmail. Therefore you need to turn on the keyboard shortcuts from Settings. Following instructions teach you about turning on the keyboard shortcuts.
>> First login your Gmail account.
>> On upper-right corner you will see 'Setting'. Click on that to open Setting link
>> Under General tab, there is a option named ' Keyboard Shortcuts'.
>> Select the radio button under 'Keyboard Shortcuts on'.
>> Click 'Save Change' at the bottom.
After that you can use Keyboard shortcuts.