yes
No there's no need for capitalization.
No it doesn't require capitalization.
No, the word "motorcycles" does not need to be capitalized unless it is at the beginning of a sentence or part of a title.
You always want to begin a new sentence with capitalization
No, because it is n ot a proper n ou n.
The capitalization is not necessary.
No it doesn't require capitalization.
He never used capitalization when beginning a new sentence.
Spiderman, Spiderman 2, Spiderman 3, and recently the Amazing Spiderman
The word "its" is the possessive of the word "it," and "it's" is a contraction of "it is." The capitalization of the "I" simply depends on its location in a sentence.
No it doesn't require any capitalization.
No they don't require capitalization.