Have you used Outlook on the web and wondered what short cuts you have available to you?  Well here is a selection of them:
Working from Online Outlook Email
  - [N]  Creating a new Message (yes it is hard to believe just N)
 
  - [Shift + Enter]  Opening the message you have your cursor on
 
  - [Ctrl + R]  Reply to send of the message
 
  - [Ctrl + Shift + R]  Reply to all on the message
 
  - [Ctrl + Shift + F]  Forward a message
 
  - [Alt + Q]  Use search
 
  - [Ctrl +Shift +2]  Go to the calendar section
 
Working from your Online Calendar
  - [N] Create a new calendar item
 
  - [Shift +Alt +1]  switch to todays view
 
  - [Shift +Alt +2]  switch to work week view
 
  - [Shift +Alt +3]  switch to full week view
 
  - [Ctrl +Shift +1]  Go to the email section