From scratch! You can always go back to an original version of a Google Doc:
Did you know there are Google Add-ons? Similar to Google extensions but they are meant to help you in a Google Doc. My favourite ones:
EasyBib Bibliography Creator: to cite sources.
Lucidchart Diagrams: to create charts.
Kaizena Shortcut: nice to give feedback.
You can create Google Forms and you'll automatically receive the answers (processed by Google, really tidy)
Would you like to watch a tutorial? Here it is.
This is mine:
Easy to create, awesome to use and nice to share.