Inclusief Online Training (or: Including Online Training)

If a traditionally published Dutch book (by a Dutch author) has “Online Training,” has it hit the mainstream?

My wife bought a book by a Dutch author (Mark Tigchelaar–no, that’s not a misspelling of his last name, there are that many consonants together, welcome to Holland) with a little black circular sticker on it that says, “Inclusief Online Training” (or: Including Online Training).

I found the book on the German Amazon and then on the main Dutch online bookseller, but there I don’t see the sticker. Interesting.

I wonder if it was a decision made later–or maybe even the training came later. I’ll have to see how my wife reads it and reacts to the offer. I’m also curious to see how the process is mapped out to get the training (e.g. sign up somewhere, a public link to public training, closed online course, using which software, etc.).

I’ll check it out and keep you posted.

But here’s my question:

If you’re writing non-fiction (or, well, honestly, even fiction), do you have a way to offer more to your readers?

Oh, and if you’re wondering what I’m going on about, this is pretty much my strategy for 2019.