I've developed an Excel add-in using the Excel-DNA library. I'd like to create a guided product tour for when the user first installs the plugin. I'm looking for the traditional product tour workflow where the window is dimmed, and the plugin features are highlighted with textual description and arrows to navigate the tour.
I've found a plugin called AbleBits that has a product tour that i'm looking to build. However, I can't find what library they used to build it, or where I should start.