Hi Rebecca,
You have access to Power Point via your student email account. Within your student email account you have OneDrive, which includes all of the Microsoft Office Suite. Once logged in you can access Onedrive, which is located towards the top left in the blue bar. When you click on OneDrive you will need to set it up by following the instructions. Once set up, if you click on New it will give you options including whether you would like to use Word, Excel or Powerpoint.
You can also upload documents into your OneDrive account. I hope this helps.