Hey there!
Answer:
As a student, you might use PowerPoint to complete assignments and create presentations. When your teacher assigns an assignment that you need to share with the class, PowerPoint would be a good program to use.
As an employee, you can use PowerPoint to keep track of sales or data about your job. This way, you can easily show your boss what you have done over the past times you've been working. You can also advertise about your job depending on what your job is.
To use it personally, you can create photo montages of trips with a photo on each slide to share with friends. You can also keep track of chores or chore salaries.
The program PowerPoint can be used in so many ways for so many things, the rest is up to your imagination!
Hope this helps :)