Once you have some content in your slides, you can start adding some effects to help make it a bit more interesting for your audience. Select a slide and click the Transitions tab. You will see a list of the most common transitions. You can also click the arrow at the end of the list to open the full listing of available transitions.  When you pick a transition, it will affect how that slide appears. For example, adding a transition to Slide 2 will affect how Slide 1 transitions into Slide 2. You will be able to see a preview in the slide editing window when you click each transition. Don't add too much transitions to your presentation. This can be distracting to the audience and keeps them from focusing on your what is the most important which is your content. Plain white is boring. If your presentation is standard text on a plain white background, half of your audience will be asleep before you reach the third slide. Use subtle backgrounds to add a little visual flair to your project.  Right-click on a blank section of your slide and select "Format Background", or click the Design tab and the click the arrow icon next to "Background" on the far right. Choose your fill type. You can choose a solid color, a gradient fill, a picture background, or a pattern fill. Selecting each choice will display several options for it, such as fill color, picture location, gradient settings, and more. Experiment until you find the background that fits your presentation. By default, the background will only be applied to your active slide. Click the "Apply to All" button to apply your background choices to every slide. Make sure that your text is still easily readable with the background you choose. Adding pictures, diagrams, and other visual aids can help the audience grasp the ideas of your presentation and drive your point home. Images break up the monotony of text and help keep the audience from tuning out.  Click the Insert tab. There will be a large number of options when it comes to inserting objects. Click the Picture...

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Write a summary of the previous text in Vietnamese:
Thêm hiệu ứng chuyển tiếp giữa các slide. Thêm hình nền. Thêm ảnh. Thêm liên kết. Nhúng video.