Which Words Should You Capitalize in Book Titles and Articles’ Heading? Titles of books and heading in articles have special rules for capitalization in English Grammar. Title capitalization is different from sentence capitalization.  We do not capitalize only first letter or proper nouns for book titles /articles’ heading as in the case of sentence capitalization rules but we capitalize all major words and words longer than four letters. However, there are some variations according to style that you are following in your writing.  In this article, we will discuss all major title capitalization styles. What Is Title Capitalization? Title capitalization is the form of capitalization of words in a title of a…