[VladimirGolovin]

Take my advice with a grain of salt, but:

Get a ChatGPT4 subscription and ask away. It may hallucinate, but it lets you ask questions and immediately clarify points you don't understand. When you get the basic understanding, check it against a more reputable source (e.g. Investopedia?)

Here's an example question (which I obviously made up):

"Hi! I'm about to get a job in finance but I feel that I don't fully understand some of the important concepts, such as compound interest. Can you explain compound interest to me?"

[Kon-Peki]

These books, which are expensive because I don't think they're printed anymore, are going to be far more useful than GPT:

https://www.amazon.com/Dictionary-Finance-Investment-Busines...

And since the resale value is extremely high, so you can always resell if/when you don't need them anymore, possibly for a profit.