Who would do an MBA when you can literally read these books and gain knowledge equivalent to an MBA graduate?
Apply what you learn.Only then you can remember what you have learnt.
One piece of advice that I got from a wise person is, if your only way of gaining knowledge is by asking "Why" then it's stupidity you should capture knowledge through various sources, and it made sense. 🫡
How do you gain knowledge by the way?
If you are starting out in a startup always try to target India 1 as it's very difficult to extract money from India 2 and India 3, wait until you become a seasoned entrepreneur.