Annotating Slides
Comments added to a slide are not shown during the actual presentation and can be convenient indicators. To add comments, click on Insert > Comment and type your comment info the comment box that popup's up. Click View > Comments will display the comments. furthermore, the Next Comment and Previous Comment buttons on the Reviewing toolbar can be used to browse thought the comments in the presentation.

Maintain Proportions While Resizing Elements
Resizing your images while retaining proportions in their positions relative to one another can be done easily in PowerPoint. Select the object one at a time, keeping the Shift key pressed, Drag the object to the desired size and PowerPoint will automatically scale them all.

Import Outlines From Word
Instead of creating presentations outlines in PowerPoint, they can also be conveniently imported straight away from Word. First, open eh file in Word and click on the File > Send To. Select Microsoft PowerPoint to export outline to PowerPoint. it will help to have the outline properly formatted with word heading styles.

Animate your Slide Show
Add animations to your presentation for that extra pep and dazzle. Switch to slide you wish to animate. click Show > Custom Animation > Timing. Check the checkboxes for the objects you which to animate from the list of objects. Choose the animation from the Effects tab for each other. click OK to save the animation.

Create Semi-transparent Objects
To create a semitransparent object, say, for watermark, select the object you want and them ungroup it by clicking on Draw > Ungroup from the Draw toolbar. Once the object is ungrouped, regroup it by selecting the Group option again from the Draw menu. This will convert the picture to a Microsoft Office Drawing Object. click on Format > Object. Under the Colors and Lines tab check the Semitransparent box. Click the OK button to get your see though object.

Use Curved Text
WordArt allows text to be styled and twisted in various ways. For using curved text in PowerPoint, click on Insert > Picture > WordArt, choose the style that you want to apply to the text and click OK. A dialog box will prompt you for the text to be places in the given format. After the WordArt object has been generated, select it and click on the Shape button on the WordArt toolbar. Here you can choose the style in which you want the text to be bent.

Check Your Formatting
Checking text formatting on all the sides for consistency can be time consuming and tough. PowerPoint can help you with this. Switch to Outline or Normal view and click on the Show Formatting button on the Outlining toolbar. The outline will show all formatted text that would appear in the presentation, thus allowing you to compare between slides and remove any inconsistencies between font styles.

Use Portions of Images
You can keep a just portion of a Metafile in a slide instead of teh complete picture. Insert the image into your slide and select it. Click on Draw > Ungroup from the Draw toolbar to ungroup the image components. You can now select the portions you don't want and delete them. Regroup the image once you are finished.

Making Notes in Slide Sorter View
When you're checking out your presentation in Slide Sorter view, the Notes pane is not visible. No need to change views to add a note to the given slide though/ Clicking the Speaker Notes button on the Slide Sorter toolbar gives you a dialog box to add you noted in.