This is collection of script fragments, mini projects, working examples of things you can do with AppsScript.
Explore the Examples at the left hand side, some link to Google Sheets where you can poke around the code using the menu Extensions > AppsScript. Some have code samples. Most are only available to UoY people and assume a working knowledge of the basics of AppsScripts. Some might not work because the authentication has rotted over time. In most cases I'd recommend making your own copy of the sheet and working with that.
*Handy Tip: This Google Drive search is worth bookmarking, Show my Apps Script files and projects in Google Drive, because it gives different, and my opinion better results than just searching Google Drive for script related content.*