Course content back-up
Our database of courses is backed up daily. This is a fully automated process and you don't need to do anything to enable it.
That said, we definitely recommend keeping your content stored locally as well.
For videos and other files, you can either save them all on your computer or use a cloud file service such as Dropbox or Google Drive.
We recommend writing all text/articles in a word processing tool such as Quip or Google Docs so you have a copy of all your activity text in a central place.