diff --git a/_basics/operators.md b/_basics/operators.md
index 1e0a414..0f945cf 100644
--- a/_basics/operators.md
+++ b/_basics/operators.md
@@ -70,7 +70,7 @@ You can use multiple operators in a tag:
 
 ```liquid
 {% raw %}
-{% if product.title contains 'Pack' %}
+{% if product.title contains "Pack" %}
   This product's title contains the word Pack.
 {% endif %}
 {% endraw %}
@@ -80,8 +80,8 @@ You can use multiple operators in a tag:
 
 ```liquid
 {% raw %}
-{% if product.tags contains 'Hello' %}
-  This product has been tagged with 'Hello'.
+{% if product.tags contains "Hello" %}
+  This product has been tagged with "Hello".
 {% endif %}
 {% endraw %}
 ```
@@ -95,7 +95,7 @@ In tags with more than one `and` or `or` operator, operators are checked in orde
 ```liquid
 {% raw %}
 {% if true or false and false %}
-  This evaluates to true, since the 'and' condition is checked first.
+  This evaluates to true, since the `and` condition is checked first.
 {% endif %}
 {% endraw %}
 ```
diff --git a/_filters/compact.md b/_filters/compact.md
index 66333be..2847104 100644
--- a/_filters/compact.md
+++ b/_filters/compact.md
@@ -10,7 +10,7 @@ For this example, assume `site.pages` is an array of content pages for a website
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% assign site_categories = site.pages | map: 'category' %}
+{% assign site_categories = site.pages | map: "category" %}
 
 {% for category in site_categories %}
 - {{ category }}
@@ -34,7 +34,7 @@ By using `compact` when we create our `site_categories` array, we can remove all
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% assign site_categories = site.pages | map: 'category' | compact %}
+{% assign site_categories = site.pages | map: "category" | compact %}
 
 {% for category in site_categories %}
 - {{ category }}
diff --git a/_tags/control-flow.md b/_tags/control-flow.md
index 505f1bd..83f30fc 100644
--- a/_tags/control-flow.md
+++ b/_tags/control-flow.md
@@ -13,7 +13,7 @@ Executes a block of code only if a certain condition is `true`.
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% if product.title == 'Awesome Shoes' %}
+{% if product.title == "Awesome Shoes" %}
   These shoes are awesome!
 {% endif %}
 {% endraw %}
@@ -31,7 +31,7 @@ The opposite of `if` – executes a block of code only if a certain condition is
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% unless product.title == 'Awesome Shoes' %}
+{% unless product.title == "Awesome Shoes" %}
   These shoes are not awesome.
 {% endunless %}
 {% endraw %}
@@ -46,7 +46,7 @@ This would be the equivalent of doing the following:
 
 ```liquid
 {% raw %}
-{% if product.title != 'Awesome Shoes' %}
+{% if product.title != "Awesome Shoes" %}
   These shoes are not awesome.
 {% endif %}
 {% endraw %}
@@ -59,10 +59,10 @@ Adds more conditions within an `if` or `unless` block.
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-<!-- If customer.name = 'anonymous' -->
-{% if customer.name == 'kevin' %}
+<!-- If customer.name = "anonymous" -->
+{% if customer.name == "kevin" %}
   Hey Kevin!
-{% elsif customer.name == 'anonymous' %}
+{% elsif customer.name == "anonymous" %}
   Hey Anonymous!
 {% else %}
   Hi Stranger!
@@ -82,11 +82,11 @@ Creates a switch statement to compare a variable with different values. `case` i
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% assign handle = 'cake' %}
+{% assign handle = "cake" %}
 {% case handle %}
-  {% when 'cake' %}
+  {% when "cake" %}
      This is a cake
-  {% when 'cookie' %}
+  {% when "cookie" %}
      This is a cookie
   {% else %}
      This is not a cake nor a cookie
diff --git a/_tags/iteration.md b/_tags/iteration.md
index 97a0b2b..1f47092 100644
--- a/_tags/iteration.md
+++ b/_tags/iteration.md
@@ -1,6 +1,6 @@
 ---
 title: Iteration
-description: An overview of iteration or 'loop' tags in the Liquid template language.
+description: An overview of iteration or "loop" tags in the Liquid template language.
 ---
 
 Iteration tags run blocks of code repeatedly.
@@ -179,10 +179,10 @@ Loops through a group of strings and outputs them in the order that they were pa
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% cycle 'one', 'two', 'three' %}
-{% cycle 'one', 'two', 'three' %}
-{% cycle 'one', 'two', 'three' %}
-{% cycle 'one', 'two', 'three' %}
+{% cycle "one", "two", "three" %}
+{% cycle "one", "two", "three" %}
+{% cycle "one", "two", "three" %}
+{% cycle "one", "two", "three" %}
 {% endraw %}
 ```
 
diff --git a/_tags/variable.md b/_tags/variable.md
index 6bc26a7..d99c314 100644
--- a/_tags/variable.md
+++ b/_tags/variable.md
@@ -61,7 +61,7 @@ Using `capture`, you can create complex strings using other variables created wi
 <p class="code-label">Input</p>
 ```liquid
 {% raw %}
-{% assign favorite_food = 'pizza' %}
+{% assign favorite_food = "pizza" %}
 {% assign age = 35 %}
 
 {% capture about_me %}