doc(roadmap-for-learning) more internal links, intro sentence

docs/technical-documentation/solution/tools/Backstage/roadmap-for-learning/_index.md

@@ -2,6 +2,8 @@
 title: Roadmap for learning backstage
 ---
 
+This page provides a roadmap for learning and working effectively with Backstage, an open-source developer portal platform created at Spotify. The roadmap is divided into stages to help you progress from fundamental concepts to advanced usage and customization.
+
 ## 1. Foundational Knowledge
 
 ### 1.1 Developer Portals and Platform Engineering
@@ -27,10 +29,10 @@ title: Roadmap for learning backstage
 
 ### 2.3 Key concepts
 
-- Software Catalog: Learn about entities, YAML configuration, how to register components.
-- Plugins: Understand how plugins are structured (frontend/backstage/plugins/*) and how they integrate with the rest of the system.
-- Scaffolder: Explore templates to spin up new projects or resources quickly.
-- TechDocs: Understand how documentation is generated and displayed in Backstage.
+- [Software Catalog](https://backstage.io/docs/features/software-catalog/): Learn about entities, YAML configuration, how to register components.
+- [Plugins](https://backstage.io/docs/plugins/): Understand how plugins are structured (frontend/backstage/plugins/*) and how they integrate with the rest of the system.
+- [Software Templates](https://backstage.io/docs/features/software-templates/): Explore templates to spin up new projects or resources quickly.
+- [TechDocs](https://backstage.io/docs/features/techdocs/): Understand how documentation is generated and displayed in Backstage.
 
 ## 3. Configuring and Extending Backstage
 
@@ -45,3 +47,7 @@ title: Roadmap for learning backstage
 ## 4. Working with the Ecosystem
 
 ### 4.1 Advanced Plugins & Integrations
+
+### 4.2 Scaffolder templates
+
+### 4.3 APIs and External Systems