Capitalization is the writing of a word with its first letter in uppercase and the remaining letters in lowercase. It is used for proper nouns, the beginning of sentences, and certain titles.

The first word in a sentence should always be capitalized.

A proper noun is a specific name for a particular person, place, or organization, and it is always capitalized (e.g., 'Julian', 'Canada', 'Beyonce').

In titles, capitalize the first and last words, as well as all major words in between (e.g., 'The Great Gatsby').

'January' is a proper noun and should be capitalized.

'The President' should be capitalized when referring to a specific president (e.g., 'The President of the United States').

Days of the week (e.g., 'Monday', 'Tuesday') are always capitalized.

Names of countries (e.g., 'Canada', 'Mexico') are always capitalized.

Yes, 'I' should always be capitalized when referring to oneself.

'Uncle' should be capitalized because it is used as a title before a name.