General Rules:
* Always capitalize the first word of a title: This is true regardless of the word.
* Capitalize all major words (nouns, pronouns, verbs, adjectives, adverbs): This rule is generally followed for titles.
* Don't capitalize articles (a, an, the), prepositions (of, in, to), or conjunctions (and, but, or) unless they are the first or last word of the title.
Specific to "become":
* If "become" is the first word of the title, it should be capitalized.
* If "become" is a major word in the middle of the title, it should be capitalized.
* If "become" is a short word in the middle of the title, like a preposition, it's usually not capitalized.
Example:
* Capitalized: "How to Become a Writer"
* Not Capitalized: "The Challenges of Becoming a Writer"
Style Guides:
* APA (American Psychological Association): Follows the general rules above.
* MLA (Modern Language Association): Follows the general rules above.
* Chicago Manual of Style: Follows the general rules above.
Best Practice:
If you're unsure, it's always best to err on the side of capitalization, as it's more likely to be considered correct.