There are lots of courses you can learn about the stock market from scratch and choosing which stocks to invest. like
Introduction to financial market
Trading basics
Financial market
Investment management
Market analytics
Trading strategies of emerging market.
You can join any of the institutes to learn the stock market, There are various institute you can join to learn about the stock market
NIFTY trading institute
National stock exchange for short-term courses
Sharemarketshiksha: Their online classes are hugely flexible which will set you free from the hassles of attending the pre-assigned classes and give you the freedom to learn from wherever you are and whenever you can.
ICFM
IFMC.
sharemarketshiksha 