Where can I find a plugin to deploy a site presentation?

Question

JavaScript

I can’t find a plugin that teaches how to use the site, for example, dims the screen, except for one block and shows some text, you press the button next, this block is dimmed - another becomes bright with a different text. There was an article on Habré, I can’t find it, can someone tell me?

Answer 1

There is also something like this .