Students, teachers, anybody! Here is how you can post your own HTML webpages to the web for free by creating a free account on github.com. Teachers may find this helpful for modifying STEMcoding activities posted here
http://go.osu.edu/physics_coding
http://go.osu.edu/math_coding

Teachers, for advice on modifying STEMcoding activities please see this video from Jimmy Newton
https://www.youtube.com/watch?v=X-hstXmaQWI
Please note that besides MS studio, there are other tools to edit HTML pages like notepad on windows or TextEdit on Mac.