Build in-application tutorials for web apps

[FrancescoTonini2]

I am trying to find resources to build some easy in-application tutorials for my web app. An example of what I am trying to accomplish is used for the Landsat Explorer app (click on tutorial widget). It basically shows hands-on step-by-step interactive tutorials for a number of features and widgets inside the web app. Does anyone have any online resource or code examples I can use and follow to build something similar?