Update docs-new/docs/index.md

Co-authored-by: Meg McRoberts <[email protected]>
Signed-off-by: Moritz Wiesinger <[email protected]>

docs-new/docs/index.md

@@ -5,4 +5,16 @@ If you are new to Keptn, please check out the following sections:
 
 - [Core Concepts](./core-concepts/index.md) will help you understand what Keptn is all about
 - [Get Started](./getting-started/index.md) helps you get going with your first use cases for Keptn
-- [Installation](./installation/index.md) will guide you through the installation procedure of Keptn
+- [Installation](./installation/index.md) guides you through
+the installation procedure for Keptn
+and provides information about special configuration options
+that are available.
+- [Guides](../guides/index.md) provide detailed and comprehensive how-to information
+for Keptn features and capabilities.
+- [Reference](../reference/index.md) provides comprehensive information
+about the CRDs and APIs that define how Keptn behaves.
+- [Components](../components/index.md) provides architectural information
+about how Keptn functionality is implemented
+for people who want a deeper understanding of Keptn
+or who need this information to troubleshoot their systems.
+It also includes information about updating and uninstalling Keptn.