diff --git a/_includes/base_path.html b/_includes/base_path.html
index 0acf4b9..7efb357 100644
--- a/_includes/base_path.html
+++ b/_includes/base_path.html
@@ -1,5 +1,5 @@
 {% comment %}
-This is adapated from: https://ricostacruz.com/til/relative-paths-in-jekyll
+This is adapted from: https://ricostacruz.com/til/relative-paths-in-jekyll
 
 `page.url` gives the URL of the current page with a leading /:
 
diff --git a/_includes/javascript.html b/_includes/javascript.html
index ac8f16d..fcc74e6 100644
--- a/_includes/javascript.html
+++ b/_includes/javascript.html
@@ -1,5 +1,5 @@
 {% comment %}
-  Javascript used in lesson and workshop pages.
+  JavaScript used in lesson and workshop pages.
 {% endcomment %}
 <script src="{{ relative_root_path }}/assets/js/jquery.min.js"></script>
 <script src="{{ relative_root_path }}/assets/js/bootstrap.min.js"></script>
diff --git a/_includes/lc/intro.html b/_includes/lc/intro.html
index a4a53ec..7f8609a 100644
--- a/_includes/lc/intro.html
+++ b/_includes/lc/intro.html
@@ -4,7 +4,7 @@
 </p>
 <ul>
   <li>automate repetitive, boring, error-prone tasks</li>
-  <li>create, maintain and analyse sustainable and reusable data</li>
+  <li>create, maintain and analyze sustainable and reusable data</li>
   <li>work effectively with IT and systems colleagues</li>
   <li>better understand the use of software in research</li>
   <li>and much more...</li>
diff --git a/assets/css/lesson.scss b/assets/css/lesson.scss
index 522e4fd..6e9e81e 100644
--- a/assets/css/lesson.scss
+++ b/assets/css/lesson.scss
@@ -44,7 +44,7 @@ $color-testimonial: #fc8dc1 !default;
 .matlab, .language-matlab { @include cdSetup($color-source); }
 .python, .language-python { @include cdSetup($color-source); }
 .r, .language-r           { @include cdSetup($color-source); }
-.sql, .langauge-sql       { @include cdSetup($color-source); }
+.sql, .language-sql       { @include cdSetup($color-source); }
 
 .error pre,
 .output pre,
diff --git a/bin/chunk-options.R b/bin/chunk-options.R
index 8ac9572..6bd4aef 100644
--- a/bin/chunk-options.R
+++ b/bin/chunk-options.R
@@ -20,7 +20,7 @@ knitr_fig_path <- function(prefix) {
     opts_chunk$set(fig.path = new_path)
 }
 
-## We use the rmd- prefix for the figures generated by the lssons so
+## We use the rmd- prefix for the figures generated by the lessons so
 ## they can be easily identified and deleted by `make clean-rmd`.  The
 ## working directory when the lessons are generated is the root so the
 ## figures need to be saved in fig/, but when the site is generated,