Creat a literal string 
$animal = 'fox'
'The quick brown $animal jumps over the lazy dog.'
Details
Using the single quote (‘) will create a literal string, that will not evaluate any varibles
or expressions in the string. It will output exactly as entered.

Example
PS C:\> $animal = 'fox'
>> 'The quick brown $animal jumps over the lazy dog.'

The quick brown $animal jumps over the lazy dog.
  
Evaluate a Expression in a string 
$animal = 'FOX'
"The quick brown $($animal.ToLower()) jumps over the lazy dog $(2 + 3) times."
Details
Use to insert a value in a string based on an expression

Example
PS C:\> $animal = 'FOX'
>> "The quick brown $($animal.ToLower()) jumps over the lazy dog $(2 + 3) times."

The quick brown fox jumps over the lazy dog 5 times.
  
Evaluate an Variable in a string 
$animal = 'fox'
"The quick brown $animal jumps over the lazy dog."
Details
Use to insert a value in a string based on the variable

Example
PS C:\> $animal = 'fox'
>> "The quick brown $animal jumps over the lazy dog."

The quick brown fox jumps over the lazy dog.
  
HERE-STRINGS 
$string = @"
"The quick brown fox jumps over the lazy dog"  is an English-language pangrama sentence
that contains all of the letters of the alphabet. It is commonly used for touch-typing
practice, testing typewriters and computer keyboards, displaying examples of fonts, and
other applications involving text where the use of all letters in the alphabet is desired.
Owing to its brevity and coherence, it has become widely known.
"@
$string
Details
Helpful for multiple lines, quotation marks, and all unknown strings
Use double quotes to evaluate variables and expressions and single quotes for literal

Example
PS C:\> $string = @"
>> "The quick brown fox jumps over the lazy dog"  is an English-language pangrama sentence
>> that contains all of the letters of the alphabet. It is commonly used for touch-typing
>> practice, testing typewriters and computer keyboards, displaying examples of fonts, and
>> other applications involving text where the use of all letters in the alphabet is desired.
>> Owing to its brevity and coherence, it has become widely known.
>> "@
>> $string

"The quick brown fox jumps over the lazy dog"  is an English-language pangrama sentence
that contains all of the letters of the alphabet. It is commonly used for touch-typing
practice, testing typewriters and computer keyboards, displaying examples of fonts, and
other applications involving text where the use of all letters in the alphabet is desired.
Owing to its brevity and coherence, it has become widely known.
  
Repeat a character 
"ha" * 5
Details
This will repeat the given string by the number given

Example
PS C:\> "ha" * 5

hahahahaha
  
Repeat a character inside another string 
"<$("#" * 5) Repeating character example $("#" * 5)>"
Details
This will repeat the given string by the number given inside of another string

Example
PS C:\> "<$("#" * 5) Repeating character example $("#" * 5)>"

<##### Repeating character example #####>