A Rule is basically an instruction for Microsoft Outlook to follow. So, you can instruct your Outlook to follow one instruction by setting up a rule. Basically Outlook rule will allow you what to do when you receive a mail from particular person or with particular subject line to your inbox. By defining a rule you can automatically move a mail coming from your personal friend to a personal folder or if you are supposed to receive regular mails with a particular subject line then you can automatically move it to one particular folder. In such way Microsoft Outlook Rules will help you to organize your inbox.
Watch the embedded video to see how you can configure Microsoft Outlook rules.