After completing a company secretary course from ICSI, there are various opportunities waiting for you after CS, you have to search for them and then you can join that career or you can join the stock market.
However, if you want to learn fundamental and technical analysis you can join various institute like
NIFTY trading academy
National stock academy
Radical Institute of stock market,
Maheswari institute,
Arihant capital market,
Kalpataru Institute of capital market,
Sharemarketshiksha etc.
(Source: https://www.quora.com/What-are-the-career-options-after-completing-Company-Secretary-course-from-icsi)
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