diff --git a/QOD-September-2021.md b/QOD-September-2021.md
index 0f669e4..2f1a6bd 100644
--- a/QOD-September-2021.md
+++ b/QOD-September-2021.md
@@ -81,13 +81,13 @@ No | Name | Role | Contact
 
 **Description:** Did you ever wonder if you can build a personal tracking platform similar to how Google tracks you but without Google tracking you? Come and join me for an informal session where I will show you how easy it is to build a platform like this using FOSS GIS. Note the presentation will use QGIS but also focus a lot on other related tools needed in the workflow.
 
-**Stack Links: **
-- https://owntracks.org/
-- https://mqtt.org/
-- https://mosquitto.org/
-- https://nodered.org/
-- https://postgis.net/
-- https://qgis.org/
+**Stack Links:**
+- https://owntracks.org/ For tracking device location and telemetry information
+- https://mqtt.org/ For sending data from the device to the server
+- https://mosquitto.org/ For receiving and managing messages
+- https://nodered.org/ For transforming information and building dashboards
+- https://postgis.net/ For data storage and management
+- https://qgis.org/ For map making and GIS
 
 
 ## QGIS a vibrant Community