Monetary banking, finance, financial engineering, securities investment, financial mathematics, etc. You can also read books by yourself, which is also a teaching material in these areas, especially finance, securities investment and financial engineering. Sometimes, if you read more books, you will understand the concept. Everyone may interpret these concepts differently. You should grasp and understand them yourself and recommend a book you have read: Managing Financial Risks by Charles W. Smithson. Personally, I think it's important to understand the examples better. You can also read some books on derivatives.