Is there any professional course that teaches you the basics of investing in the stock market

Yes, there are lots of professional courses that teach you the basics of investing in the stock market like National stock exchange provided the certification course in the basics of stock market. There are lots of other institutes who also provided basic as well as an advanced course in the stock market like

National stock Exchange

NIFM

ICFM

NIFTY Trading academy

Sharemarketshiksha

IFMC

And there are a lot of other institutes who provided basic Training in the stock market

(Source: https://www.quora.com/Is-there-any-professional-course-that-teaches-you-the-basics-of-investing-in-the-stock-market)