Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a bit sexist and outdated but still worth reading

The author focuses mainly on European languages but his tipscan be used to study any language. His advice includes:1) making flashcards2) studying while waiting in line or on the phone3) buying all available audio lessons and rotating through them4) reading real newspapers and magazines is more valuable thanusing the most advanced textbooksIt's not 5 star because he didnt mention the Leitner methodfor flashcards and it's too long-winded in the beginning.