Thanks to the Grammar Diva Arlene Miller’s wonderful blog, this blog post talks about using colons, and how to write different types of lists correctly.
Source: Colon Alert: Something’s Coming…
co·lon1
ˈkōlən/
noun
noun: colon; plural noun: colons
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a punctuation mark (:) indicating.
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that a writer is introducing a quotation or a list of items.
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that a writer is separating two clauses of which the second expands or illustrates the first.
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a statement of proportion between two numbers.“a ratio of 10:1”
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the separation of hours from minutes (and minutes from seconds) in a statement of time given in numbers.“4:30 p.m.”
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the number of the chapter and verse respectively in biblical references.“Exodus 3:2”
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mid 16th century (as a term in rhetoric denoting a section of a complex sentence, or a pause before it): via Latin from Greek kōlon ‘limb, clause.’
Building a Better Story 
I love the title of your post. It’s so full of . . . import 🙂
Seriously, good info. I must say that the use of a colon to introduce a list is one matter upon which I am fairly solid (HAR HAR!).
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