(DOCSP-19175) Add Tutorial Introduction (#183)

Author: biniona-mongodb

source/sink-connector.txt

@@ -1,3 +1,5 @@
+.. _kafka-sink-overview:
+
 ==============
 Sink Connector
 ==============

source/source-connector.txt

@@ -1,3 +1,5 @@
+.. _kafka-source-overview:
+
 ================
 Source Connector
 ================

source/tutorials/replicate-with-cdc.txt

@@ -13,15 +13,17 @@ Replicate Data with a Change Data Capture Handler
 Overview
 --------
 
-Learn how to replicate data with a **change data capture handler** in the
-{+mkc+}. A change data capture handler is a 
-<TODO: add definition of change data capture handler from sink connector - CDC page>
+Learn how to use a **change data capture (CDC) handler** to replicate data with the
+{+mkc+}. A CDC handler is a program that translates CDC events into MongoDB
+write operations. Use a CDC handler when you need to reproduce the changes in
+one datastore into another datastore.
 
-<TODO: Expand on the use case for this tutorial with content form the change
-data capture page>
+In this tutorial, you use a CDC handler to make two MongoDB collections
+contain the same documents.
 
-For more information on change data capture, see our <TODO: link to change data
-capture guide>
+If you want to learn more about how CDC handlers work rather than view
+a tutorial that demonstrates how you use them, see the
+:ref:`<sink-fundamentals-cdc-handler>` guide.
 
 Requirements
 ~~~~~~~~~~~~
@@ -36,8 +38,10 @@ Tutorial
 Further Reading
 ---------------
 
-For more information on change streams, see our
-:doc:`guide on change streams </source-connector/fundamentals/change-streams>`.
+To learn more about the topics discussed in this tutorial, see the
+following {+mkc+} guides:
 
-For more information on sink connectors, see our
-:doc:`guide on sink connectors </sink-connector/>`
+- :ref:`<sink-fundamentals-cdc-handler>`
+- :ref:`<kafka-source-change-streams>`
+- :ref:`<kafka-sink-overview>`
+- :ref:`<kafka-source-overview>`