Everyone works on the same copy, so an edit or a deletion lands for all of them at once. Give people view access unless they genuinely need to change things.
The drawing that proves the sentence above. It is the same card that is in the book.
Think of it as
a drawer in a shared desk.
For example
Three of you keep the accounts in one folder. Somebody tidies up and deletes a file, and it disappears for all three at once.
This is one card out of 275.
The hundred words you meet most are free — the whole set, animated, in one file that works with no internet.
Volume 1 has all 275 in fifteen chapters, with Staying Safe the largest chapter on purpose.