diff --git a/source/contributing.txt b/source/contributing.txt
index abb7d737..ec3e097f 100644
--- a/source/contributing.txt
+++ b/source/contributing.txt
@@ -9,8 +9,8 @@ Contributing
 .. toctree::
   :titlesonly:
 
-  contributing/code-documentation
-  contributing/contributing-guidelines
+  Code Documentation <contributing/code-documentation>
+  Contributing Guidelines <contributing/contributing-guidelines>
 
 Overview
 --------
diff --git a/source/index.txt b/source/index.txt
index 0f320dd5..bd70e418 100644
--- a/source/index.txt
+++ b/source/index.txt
@@ -6,19 +6,19 @@ Mongoid
 
 .. default-domain:: mongodb
 
-Mongoid is the officially supported object-document mapper (ODM) for MongoDB in
-Ruby. To work with Mongoid from the command line using ``rails``-like tooling,
-the `railsmdb <https://github.com/mongodb/mongoid-railsmdb>`_ utility can be used.
-
 .. toctree::
   :titlesonly:
 
-  installation-configuration
-  tutorials
-  schema-configuration
-  working-with-data
+  Installation & Configuration <installation-configuration>
+  Tutorials <tutorials>
+  Schema Configuration <schema-configuration>
+  Working with Data <working-with-data>
   API <https://mongodb.com/docs/mongoid/master/api/>
-  release-notes
-  contributing
-  additional-resources
-  ecosystem
+  Release Notes <release-notes>
+  Contributing <contributing>
+  Additional Resources <additional-resources>
+  Ecosystem <ecosystem>
+
+Mongoid is the officially supported object-document mapper (ODM) for MongoDB in
+Ruby. To work with Mongoid from the command line using ``rails``-like tooling,
+the `railsmdb <https://github.com/mongodb/mongoid-railsmdb>`_ utility can be used.
diff --git a/source/installation-configuration.txt b/source/installation-configuration.txt
index fd5ea05b..59f6e5f1 100644
--- a/source/installation-configuration.txt
+++ b/source/installation-configuration.txt
@@ -9,10 +9,10 @@ Installation & Configuration
 .. toctree::
   :titlesonly:
 
-  installation
-  reference/compatibility
-  reference/configuration
-  reference/rails-integration
+  Installation <installation>
+  Compatibility <reference/compatibility>
+  Configuration <reference/configuration>
+  Rails Integration <reference/rails-integration>
 
 Overview
 --------
diff --git a/source/release-notes.txt b/source/release-notes.txt
index 67d813fa..770f9008 100644
--- a/source/release-notes.txt
+++ b/source/release-notes.txt
@@ -9,8 +9,8 @@ Release Notes
 .. toctree::
   :titlesonly:
 
-  release-notes/upgrading
-  release-notes/mongoid-9.0
+  Upgrade <release-notes/upgrading>
+  Mongoid 9.0 <release-notes/mongoid-9.0>
 
 Overview
 --------
diff --git a/source/schema-configuration.txt b/source/schema-configuration.txt
index 091c4bcf..d974fef2 100644
--- a/source/schema-configuration.txt
+++ b/source/schema-configuration.txt
@@ -9,13 +9,13 @@ Schema Configuration
 .. toctree::
   :titlesonly:
 
-  reference/fields
-  reference/inheritance
-  reference/associations
-  reference/validation
-  reference/collection-configuration
-  reference/indexes
-  reference/sharding
+  Field Definition <reference/fields>
+  Inheritance <reference/inheritance>
+  Associations <reference/associations>
+  Validation <reference/validation>
+  Collection Configuration <reference/collection-configuration>
+  Index Management <reference/indexes>
+  Sharding Configuration <reference/sharding>
 
 Overview
 --------
diff --git a/source/tutorials.txt b/source/tutorials.txt
index 5c03cb90..51ce0167 100644
--- a/source/tutorials.txt
+++ b/source/tutorials.txt
@@ -9,12 +9,12 @@ Tutorials
 .. toctree::
   :titlesonly:
 
-  tutorials/getting-started-sinatra
-  tutorials/getting-started-rails7
-  tutorials/getting-started-rails6
-  tutorials/documents
-  tutorials/common-errors
-  tutorials/automatic-encryption
+  Sinatra <tutorials/getting-started-sinatra>
+  Rails 7 <tutorials/getting-started-rails7>
+  Rails 6 <tutorials/getting-started-rails6>
+  Documents <tutorials/documents>
+  Common Errors <tutorials/common-errors>
+  Field Level Encryption <tutorials/automatic-encryption>
 
 Overview
 --------
diff --git a/source/working-with-data.txt b/source/working-with-data.txt
index 2b8b1e91..0380fa0b 100644
--- a/source/working-with-data.txt
+++ b/source/working-with-data.txt
@@ -9,16 +9,16 @@ Working With Data
 .. toctree::
   :titlesonly:
 
-  reference/crud
-  reference/queries
-  reference/text-search
-  reference/aggregation
-  reference/map-reduce
-  reference/persistence-configuration
-  reference/nested-attributes
-  reference/callbacks
-  reference/sessions
-  reference/transactions
+  CRUD Operations <reference/crud>
+  Queries <reference/queries>
+  Text Search <reference/text-search>
+  Aggregation Pipeline <reference/aggregation>
+  MapReduce <reference/map-reduce>
+  Persistence Configuration <reference/persistence-configuration>
+  Nested Attributes <reference/nested-attributes>
+  Callbacks <reference/callbacks>
+  Sessions <reference/sessions>
+  Transactions <reference/transactions>
 
 Overview
 --------