A familiar story I hear is people with no formal coding experience starting their developer journey with Google Apps Script. I find being able to run small snippets of code are a great way to learn and a number of sites like W3 Schools and also increasingly Stack Overflow include the ability to ‘try it yourself’ with inline code runners.
If you are looking to support users getting started with Google Apps Script Amit Agarwal has this little code snippet which lets you inline/run Google Apps Script code in Google Docs. There are both limitations and considerations with this approach but as a quick way for learners to run and collaborate on small snippets, which can be contextualised with explanatory text/resources, it’s a nice starting point. Check out the source link for more details.