Zerodha varsity is good for stock market education.
But it need to be up to date with content, day by day many changes will take in exchanges like adding something removing something,
I.e In Module 8, Chapter 12, Article 12.3 and 12.4 should be removed because crudeoil mini contract is gone and the arbitrage opportunity is not possible since mini lot are removed.
My request to zerodha please kindly update the above articles from zerodha varsity and keep content up to date so new traders should not get confused with that.