Is it really necessary to take a course before getting into trading?
The training course may not need to be taken, but I still advise you to view the YouTube content, in order to study at least the exchange interface and all sorts of strategies, it is imperative to watch the video about the concept of orders, how to trade them and how to work with them.
Good suggestion.
OP can actually see the way the content creator is browsing the platform. Just an additional tip to OP that if you want to watch a video instead of just reading some articles and other sources, try to include your preferred platform on the Youtube search so that you will end up in a tutorial directly on that platform.
For example, "Beginners trading in Binance" or something close on that search query.