William Strunk 
Elements of Style [EPUB ebook] 

First published in 1918, William Strunk Jr.’s The Elements of Style is a guide to writing in American English. The boolk outlines eight "elementary rules of usage", ten "elementary principles of composition", "a few matters of form", a list of 49 "words and expressions commonly misused", and a list of 57 "words often misspelled". A later edition, enhanced by E B White, was named by Time magazine in 2011 as one of the 100 best and most influential books written in English since 1923.