Loom is a screen recording tool where you are able to record your screen, add your video or voice, annotations, and share the video with others.

Video screencasting tools you can use to create how-to videos that include voice narration, which you can use to describe what you are doing on the screen as you show it to Newcomers.
Loom is a screen recording tool where you are able to record your screen, add your video or voice, annotations, and share the video with others.
Screencast-O-Matic allows you to create and edit screencasts/how-to videos with or without narration.
Zoom Meeting is a video platform you can use to communicate with Newcomers through video meetings, text chat, audio/phone, webinars, interactive sessions, and online events.