I just found quite a long thing about day trading which is pretty funny in relation to the newest finance bro in Do-Buy.
The piece went on quite a bit so I just excised two blocks of text from it that seemed most relevant.
All Online Courses Claiming to Teach You To Day Trade Are Scams: Here's Why.
There is a distinction between a course that claims to teach a trading strategy, and a course that teaches you technical analysis for you to create your own strategy. What is surely a scam, is the first one.
For courses that teach you technical analysis, these may be legit, but even so, the entire field of technical analysis's reliability is hotly debated. Ever since computers are invented and access to large historical financial datasets are available, back testers have found mixed results applying technical analysis to data.
Regarding saturation of trading strategies, retail traders using a strategy taught by a course is not what saturates the strategy. It is quite clear retail traders do not affect the markets in any way. The point is, if a strategy can be taught in a course, it is already saturated, because there is a very high likelihood the strategy is simple and industry has already been utilizing the strategy at scale. HFT algorithms has made retail day trading quite obsolete.
What do I mean by obsolete? Does making a profit from a trade means the trader is successful? How should traders measure their success? Traders should measure their success not against the scenario where they don't invest their money, they should measure their success against the scenario where they hold the stock they are trading for the long term, or hold a well-diversified portfolio instead.
This means making a profit from a couple of trades, does not necessarily make a trader successful. Because making a profit from a trade, using any strategy or none at all, is easy. This is a statistical phenomenon - up or down, 50%. What traders should be thinking, is whether their active participation in the market outweighs passively investing for long term. S&P 500's annualized returns the past 3 years has been ~20%. If a trader is confident they can beat these benchmarks consistently, over the long term, sure, go ahead. Or if they simply have excess cash and want to learn, sure, go ahead too.
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Last last point. There are so many free resources out there. If your first instinct was to buy a course from some flashy individual flexing his money telling you you can earn easy money, instead of doing simple google searches of good books to read about trading, downloading free pdf of these books, and spending a few days to read a couple hundred pages, you are most definitely, not fit for trading. You believe in the dream of easy money, not hard work.
And just to be clear, there have indeed been cases of people earning easy money by making a few trades without having done proper research. But this is gambling, so at least call it what it is.