The colon is actually pretty simple. People shouldn't have a problem with it. But just in case, here it is!

Colons

1) Use a colon to mean “note what follows.”
a) Use a “:” before a list of items, especially after expressions like “as follows” and “the following.”
e.g.) Amazingly enough, the small bag held everything: shirts, pants, sweaters, a jacket, shoes, and a gift for my host.
N.B.) When a list constitutes the direct object of a verb or the object of the preposition, do not use a colon.
e.g.) We collected blankets, canned goods, etc.
INSTEAD OF
We collected: blankets, canned goods, etc.
e.g.) Dan has always been interested in snakes, frogs, lizards, and reptiles.
INSTEAD OF
Dan has always been interested in: snakes, frogs, lizards, and reptiles.
b) Use a “:” before a long formal statement or quotation.
e.g.) Dr. Vorchev made the following observation: “Cooperation between the leading nations of the world is essential to the survival of the planet.”
c) Use a “:” between independent clauses when the second clause explains or restates the idea in the first.
e.g.) Those hanging lamps are the most popular kind: they are inexpensive, come in many colors, and are easy to install.

2) Use a “:” in certain conventional situations.
a) The time
e.g.) 12:56 AM
b) Between chapter & verse in the Bible
e.g.) John 2:7, Genesis 27:13
c) Between the volume and #; and volume and page # of a periodical.
e.g.) National Geographic 203:16

My God you are a legend please start a group and help bronies with punctuation. I implore you!

1152308 Isn't that what he's doing here?

1152308
*Looks up at group name*
*Looks at comment*
Are you serious?

About lecture.
Thanks. That was and will be useful.