I have bookmarked many Red Blob Games posts like this one, both because of their excellent content, but also as examples of how to write truly great tutorials.

I have bookmarked many Red Blob Games posts like this one, both because of their excellent content, but also as examples of how to write truly great tutorials. Well organized content, good CSS without over-styling, advanced JavaScript but only used in the exact right places: interactive demos, toggles to customize the content more to your use case (e.g. hex vs. square), and not to hijack my scroll bar or for unnecessary flashiness. This site is my go-to for inspiration on how to write a fantastic tutorial.