As part of the Office 365 suite of apps, staff and students have access to an app called Clipchamp. This is a quick and easy video editing app, which allows you to upload a video, make a screen recording, record your webcam, or edit a video. The video below (16:33) will introduce you to editing in Clipchamp, and below that you can find some useful links to more guides. Please note that there is no need to sign up as mentioned in the video, staff and students already have access as part of the Office 365 package.
You can find more tutorials by visiting the Clipchamp YouTube page.
Learn more about Clipchamp in the guides from Microsoft: