Grammar Post: Using Colons

I am familiar with the use of colons, but I sometimes forget about them. That being said, I just wanted to brush up on the appropriate times to use them.

Colons are used before a list

Members of the health care group:

• Heidi
• Mike
• Rose
• Melinda
  

or explanation following an independent clause

I enjoy reading a good book: the Twilight novels are among my favorite.

Also, before a quotation

I often find motivation in the quotation: "Life is a journey and only you hold the map."

One site encouraged you look at colons like a gate inviting you to go on.
http://grammar.ccc.commnet.edu/grammar/marks/colon.htm