If you already have a SlideShare account and have uploaded presentations, simply follow these steps:

1. Enter your SlideShare Username below and click Save/Preview. Any public presentations that you've uploaded to SlideShare will be shown in the preview below.
2. Make sure these presentations are the ones you want to share on your profile.
3. Click the "Show" link (above, upper right) to make the presentations publicly available within your profile.
4. To remove the presentations, delete your SlideShare Username and click Save/Preview. Make sure to "Hide" your presentations from the public if you delete your SlideShare Username.