Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Speak English Herschell...

I agree with Rush.This book does have a very useful list of headlines, opening sentences, and a knowledgeable section on envelope copy with illustrations.....but the guy explains these things in such a bizarre vernacular and egotistical vibe that it was hard for me to feel any sort of enthusiasm as I was learning (or trying to). Maybe Lewis should've been a politician.If you want a sales letter book, I fully recommend Dan Kennedy's 'The Ultimate Sales Letter'. It's step by step, easily understandable, fun to read and teaches you everything Lewis does but much more. Your excitement will skyrocket. Kennedy's your Man.