There really is no right or wrong answer especially when we are missing the context of the question.
If you buy something and don't know how to use it then you would have to pay someone to tell you how to use it.
Most people would probably think why buy something if you don't know how to use it but there is a lot of things that people want but don't know how to use which is why there are people out there who you can pay to teach you how to use it. And if you don't know that person personally they would be a stranger.
I want a sailboat but have no idea how to sail. ergo I would nee