If you buy a book or a course that make you learn about something that you want to invest, then its considered as investment before learning.
Seems you are confuse Mate. You did say buy a course or book that will educate you on your proposed investment option is it not after reading or studying the course you then understand how to go about investing in that option. How is then investment before learning?,lol. Understand a post before commenting, we are not talking about buying a book or course as investment in this scenario but in terms of monetary value.
I believe everyone makes points but most of them are regarded to be out of line. Its funny how people rush to make comments with actual understanding of the whole article. Everyone have their view about posts reference. @Cosette was simply putting out his points and ideas, I see nothing wrong with what he have pin down but he also failed to understand the question been asked by OP. Perhaps he went too far but it's also recommendable to share ideas and explore our means of communication.