PowerPoint 2013 includes a new online presentation feature that makes it ridiculously easy to share your presentation with other people remotely over the Internet. To use it, simply follow these steps:
Click the Present Online button in the Slide Show Ribbon tab.
Doing this brings up the Present Online dialog box. Click Connect.
If prompted, enter your Windows Live username and password.
If you don’t have a Windows Live account, sign up for one.
After you are connected, a dialog box with the presentation address appears.
To send an e-mail to your meeting participants, click Send in Email. Next, complete the e-mail by adding recipients and any other text you wish to add and send the e-mail.
Your participants can then click the link to open the presentation in their web browsers.
You can also click Copy Link to copy the presentation link to the clipboard. You can then paste the link into an e-mail to distribute to your meeting participants.
When everyone is ready to view the presentation, click Start Presentation.
This starts the presentation. Your participants can follow the presentation in their web browsers.