Once you've installed Vimeo Record in Chrome it works just like the dozens of other screencasting tools available to Chrome users. Just click the extension's icon in Chrome then choose whether you want to record your screen with or without your webcam turned on. (I recommend turning your webcam on because it helps to make a better connection with students when they can see your face). When you're done recording your video will save into your Vimeo account.
Vimeo offers free and paid accounts. The free plan limits you to 500Mb of uploads in a week and 5GB total storage. In the free account you can make your video private or public. The free plan also lets you restrict embedding of your video.Applications for Education
Unless you're already using Vimeo to host your instructional videos, I don't see a compelling reason to switch to using Vimeo Record as your screen recording tool in place of Loom, Screencast-o-matic, or Screencastify. If you are using Vimeo to host your instructional videos then Vimeo Record might streamline your recording and publishing process.