The general rule about capitalizing titles is to capitalize the first word, the last word, and every 'important' word. What constitutes a word as being 'important' is, unfortunately, not entirely clear. However, an exception to the rule goes on to say that, subject to the general rule, one should not capitalize articles, conjunctions, or prepositions less than five letters long [some authorities say prepositions less than four letters long]. The word 'including' seems to me to be a somewhat 'important' one, and on that basis should be capitalized. Likewise, if used as a preposition, 'including' falls within the 'exception to the exception' rule about prepositions and should be capitalized on that basis as well.
Only if it is the first word.
you capitalize the first word and all the important words
When it appears at the beginning of a sentence, or in the title of something. There is no other reason to capitalize it.
You capitalize the word 'union' when it is at the start of a sentence or part of a title/name (Eg: Singapore Teachers' Union).
It should be capitalized when it forms part of a title.
Unless "it's" is the first word, there is no need to capitalize.
yes
No, the word lunch is not capitalized in a sentence. You would only capitalize it if it was part of a title (e.g. it was a word in a book title).
Yes, you must capitalize the first word, UNLESS it is a small word, such as "It" or "A" or "The".
If it's a key word in a title, or the first word of a title or part of a name of something, capitalize. Otherwise, don't.
No, except whe n it is the first or last word of the title.
yes
yea
Only if it is the first word.
Yes.
you could but it is not necesarry
Yes, it is capitalized when it is the first or last word of the title.