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The period is used to end sentences. It shouldn't grammatically be used as "...", but people do.
Example:

!

The exclamation point is also used to end sentences, but it also adds emphasis. It can also be used in quotes.
Examples:

?

The question mark is also used to end sentences, but it only is used when you are asking a question. Like the exclamation point, this can be used in quotes too.
Examples:

,

Commas have several uses and we will go through most of them now, or enough to get the basics down.

• They can be used to combine two sentences.
  

Example:

• They can seperate more then one adjectives.
  

Example:

• It can seperate a list of more than one item.
  

Example:

• Commas come after one-word interjections.
  

Example:

• Commas split un-needed clauses in the middles of sentences.
  

Example:

• Commas come after "he said," "she said," statements
  

Example:

:

Colons can only be appropriate in three different ways.

• A colon can introduce a list.
  

Example:

• A colon can be used for a restatement of a previous clause.
  

Example:

• A colon can explain an elaboration on the previous clause.
  

Example:

;

The semicolon is used for two things.

• A semicolon separates items in a list when it has internal punctuation.
  

Example:

• semicolon separates two closely related clauses. In this function, it is a little more powerful than a comma, but less powerful than a period.
  

'

In general, apostrophes have two uses: taking over for removed letters in contractions, and showing possession.

Examples:

You may have heard the rule "I before E, except after C." This spelling rule will help you, especially for words like perceive, conceive, retrieve, etc. Although, the whole rule goes: "I before E, except after C and when sounding like A, as in neighbor or weigh."

When not to use I before E:

When a C comes right before it.
When the diphthong is pronounced like an A.
When you're trying to spell a cooperation :tongue:
'Weird' is a a weird word to the rule and it breaks it. Just because it is weird

When creating the plural of a word that ends in the letter "y", the "y" is substituted by "ie."
Example:


This rule also applies when you add suffixes to adjectives that end in "y".
Example:

A person, place, or thing.
Example:

A word that replaces or stands for a noun.
Example:

An action word.
Example:

A word that describes or modifies a verb.
Example:

A word that indicates the relationship of a noun to another word.
Example:

An expression (can be a one word, but for most of the time, more) which contains a single thought but is not necessarily a complete sentence. Words make up phrases; phrases make up sentences.