[dev docs] Add sample data tutorial. Closes #98297

dev_docs/tutorials/sample_data.mdx

@@ -0,0 +1,33 @@
+---
+id: kibDevTutorialSampleData
+slug: /kibana-dev-docs/tutorial/sample-data
+title: Add sample data
+summary: Learn how to add sample data to Kibana
+date: 2021-04-26
+tags: ['kibana', 'onboarding', 'dev', 'architecture', 'tutorials']
+---
+
+## Installation from the UI
+
+1) Navigate to the home page
+1) Click "Add data"
+1) Click on the "Sample data" tab
+1) Select a dataset by clicking on the "Add data" button
+
+![Sample Data](../assets/sample_data.png)
+
+## CSV Upload
+
+1) Navigate to the Machine Learning application
+1) Click on the "Data Visualizer" tab
+1) Click on "Select file" in the "Import data" container
+
+![CSV Upload](../assets/ml_csv_upload.png)
+
+## makelogs
+
+The makelogs script generates sample web server logs.  Make sure Elasticsearch is running before running the script.
+
+```sh
+node scripts/makelogs --auth <username>:<password>
+```