The DLS computers have iMovie installed and ready to use for your class or personal projects. If you want more control, you can use Premiere Pro in Adobe Creative Cloud, which is also already installed on the DLS computers.
You can also edit videos on Canva (more information here).
Animaker is a website with a free version that lets you create short animations.
Access Adobe Premiere Pro tutorials here.
NOTE: If you want to create captions for subtitles, Premiere Pro can auto-generate a transcript that can be turned into captions. These can be hard-coded into your video, or you can download the .srt file for use on platforms like YouTube.
You may want to look for footage to use on Academic Videos Online (AVON) or Kanopy, both of which are available through the library's databases. There are tutorials for accessing these databases in this guide.