WeVideo - The best online editing program for Chromebooks!
Tutorial for WeVideo - Written Instructions on the basics of WeVideo.
WeVideo Recorder Extension - This allows you to record video with your Chromebook.
How to Upload Videos to WeVideo From an iPhone​ - Step by step instructions on how to get a video recorded on your Iphone to Google Drive, and then to WeVideo.
How to Submit a Video to Google Classroom - Instructions on how to submit your finished video the correct way to Classroom.
Screencastify - Record your screen. Good for flipped classroom, Khan academy style lessons, etc.
Free music & Sound Effects - All free to download and put in any videos you edit. Youtube allows you to upload videos with these sounds in it without violating any copyright.