I also want to learn building passive income in the meanwhile over short term.

I need to learn short selling and other methods for passive income

A: For wealth building, U have to learn fundamental analysis ( Needs less time and effort, long term benefits high, risk involved is low). You can just google the best books, courses and materials for it.

For passive income, U can either do swing trading or intraday. (Needs more time and effort, short term benefits, long term benefits not much, risk involved is high) You can google it or join some class. For this method of income start with virtual trading platforms where you can use virtual money to trade in real market and learn

Before everything, try to read the book called Psychology of money