CTRL + N is one of most versatile keyboard shortcuts in Microsoft Office and beyond. Here are some of the ways that you can use this keyboard combo:

In Word, it creates a new document

In Excel, it creates a new workbook

In PowerPoint, it creates a new presentation

In Outlook Mail, it creates a new email message

In Outlook Calendar, it creates a new appointment

In Outlook People, it creates a new contact

In Outlook Tasks, it creates a new task

In Internet Explorer and File Explorer, CTRL + N opens a new window