Updated content and screenshots till lesson 5

lesson-3-2/content.md

@@ -1,6 +1,4 @@
-url - `opentelemetry-python-example`
+# Lesson 3.2: OpenTelemetry Manual Instrumentation of Python Application
-
----
 
 In the previous tutorial, we set up auto-instrumentation for our Flask application with OpenTelemetry without any code changes. In this tutorial, we will manually configure the agent.
 
@@ -67,7 +65,7 @@ Now, let's see how to run the application.
 ```bash
 OTEL_RESOURCE_ATTRIBUTES=service.name=my-application \
 OTEL_EXPORTER_OTLP_ENDPOINT="https://ingest.in.signoz.cloud:443" \
-OTEL_EXPORTER_OTLP_HEADERS="signoz-access-token=72282c07-60ad-45ff-9131-3b8819f9cdc3" \
+OTEL_EXPORTER_OTLP_HEADERS="signoz-access-token=<SIGNOZ_INGESTION_KEY>" \
 python lesson-3-2/app.py
 ```
 
@@ -77,7 +75,9 @@ Interact with the Flask application to generate tracing data and send it to SigN
 
 ## Step 5: See Trace Data in SigNoz
 
-<Insert screenshots showing actual spans from the code>
+Once you've created some dummy telemetry by interacting with your application, you will be able to find your application under the `Services` tab of SigNoz.
+
+![Application being monitored in SigNoz](static/images/application-monitored.png)
 
 
 ## Next Steps

lesson-4/app.py

@@ -88,7 +88,7 @@ def action():
         desc = request.values.get("desc")
         date = request.values.get("date")
         pr = request.values.get("pr")
-        span.set_attribute("name", name)
+        span.set_attribute("task_name", name)
         span.add_event("Adding a Task")
         todos_coll.insert_one(
             {"name": name, "desc": desc, "date": date, "pr": pr, "done": "no"}

lesson-4/content.md

@@ -1,6 +1,4 @@
-url - `opentelemetry-python-manual-instrumentation`
+# Lesson 4: Create Manual Spans in Python application using OpenTelemetry
-
----
 
 In the previous tutorials, we set up out of the box tracing, metrics and logs in our Flask application. In this tutorial, we will show you how to manually create spans.
 
@@ -187,7 +185,22 @@ def my_function():
 
 ## Step 6: See your Spans in SigNoz
 
-<screenshots showing exact spans that was created with manual instrumentation>
+The sample code for lesson 4 has a manual span named `add_task` which gets created whenever you create a new task in the to-do application. To see this span go to the `Traces` tab and apply filters for your application.
+
+```bash
+OTEL_RESOURCE_ATTRIBUTES=service.name=my-application \
+OTEL_EXPORTER_OTLP_ENDPOINT="https://ingest.{region}.signoz.cloud:443" \
+OTEL_EXPORTER_OTLP_HEADERS="signoz-access-token=<SIGNOZ_INGESTION_KEY>" \
+python lesson-4/app.py
+```
+
+Once you run the application and add a task, you will be able to see it in SigNoz.
+
+![Manual span in the list view of traces](static/images/manual-spans.png)
+
+You can see your span in the trace detail view too which will show how the request flowed and how much it took for the `add_task` operation.
+
+![See your span in detailed trace view](static/images/manual-spans.png)
 
 ## Next Steps
 

lesson-5/content.md

@@ -1,6 +1,4 @@
-url - `opentelemetry-python-manual-instrumentation`
+# Lesson 5: Creating custom metrics in Python Application using OpenTelemetry
-
----
 
 In the previous tutorials, we have seen how to manually create spans in a Python application. In this tutorial, we will look at how to create custom metrics using OpenTelemetry.
 
@@ -101,7 +99,33 @@ The `create_gauge()` method creates a gauge instrument with the given name, unit
 
 ## Step 6: See your metrics in SigNoz
 
-<screenshots showing exact metrics that was created with manual instrumentation>
+The sample code for lesson 5 has a custom metric named `todo_counter` which keeps a track of number of To-Dos added by the user. You can create customized dashboards to monitor your custom metrics.
+
+In order to see your custom metric in SigNoz, run the updated code with custom metric in Lesson 5.
+
+```bash
+OTEL_RESOURCE_ATTRIBUTES=service.name=my-application \
+OTEL_EXPORTER_OTLP_ENDPOINT="https://ingest.{region}.signoz.cloud:443" \
+OTEL_EXPORTER_OTLP_HEADERS="signoz-access-token=<SIGNOZ_INGESTION_KEY>" \
+python lesson-5/app.py
+```
+
+Let's suppose you add 6 tasks in your to-do application.
+
+![6 tasks added in the to-do application](static/images/6-tasks.png)
+
+You can go to `Dashboards` in SigNoz and create a new panel to monitor the number of tasks in your to-do application using the `todo_counter` metric.
+
+![todo_counter metric](static/images/custom-metrics-opentelemetry-python.png)
+
+You can create a value panel type and monitor the number of tasks being created.
+
+![Value panel type](static/images/no-of-tasks-added.png)
+
+You can also set alerts on metrics based on your use-case directly from these panels.
+
+![Value panel type](static/images/create-alerts-custom-metrics.png)
+
 
 ## Next Steps