The survey is important because it cutomizes the course for your given situation, things like platform (iOS, Andriod, Desktop), investment ammonut (cold storage vs. mobile wallet), trading sophistication (live order book vs buy now screen) etc...
(critical thinking cap on: not made of tin-foil)
and then you sell this data to scammers/hackers whom use this data to form a dummy/guppy list
finding those members with weak OS, weak wallets, significant funds, low knowledge, so that they can social hack/phish the members via provided contact details
so the question, what are your intentions of using the data beyond tailoring tutorials? are you going to sell that data?