When you share a Google Doc, there are several ways you can customize its settings to restrict how other people can edit it.

This is my simple way to use Google Docs on your phone I walk through how I use Google Docs right from my iPhone, but this works on Android too. First, I show how to download the app and sign in with ...

It's easy to unshare a Google Doc after sharing it with others. As long as you're the owner, you can change sharing permissions whenever you like.