What do I get from reading Reminiscences of a Stock Operator?
I do not understand how such a person could be considered an inspiration for traders. Livermore's Wikipedia article gives some possible clues. "In a time when accurate financial statements were rarely published, getting current stock quotes required a large operation, and market manipulation was rampant, Livermore used what is now known as technical analysis as the basis for his trades. His principles, including the effects of emotion on trading, continue to be studied." "Some of Livermore's trades, such as taking short positions before the 1906 San Francisco earthquake and just before the Wall Street Crash of 1929, are legendary within investing circles. Some observers have regarded Livermore as the greatest trader who ever lived, but others have regarded his legacy as a cautionary tale about the risks of leverage to seek large gains rather than a strategy focused on smaller yet more consistent returns. [4]"  Thus, if you like to read biographies, it might be an interesting view into the past history of stock speculating.