Docs: Update our About chapter

This is visible first when opening icinga.com/docs/icinga2/latest

refs #6830

diff --git a/doc/01-about.md b/doc/01-about.md
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 ## What is Icinga 2?  <a id="what-is-icinga2"></a>
 
-Icinga 2 is an open source monitoring system which checks the availability of
-your network resources, notifies users of outages and generates performance
-data for reporting.
+[Icinga 2](https://icinga.com/products/icinga-2/) is a monitoring system which checks
+the availability of your network resources, notifies users of outages, and generates
+performance data for reporting.
 
 Scalable and extensible, Icinga 2 can monitor large, complex environments across
 multiple locations.
 
-## Licensing  <a id="licensing"></a>
+Icinga 2 as core requires [Icinga Web 2](https://icinga.com/products/icinga-web-2/)
+on top in your Icinga Stack.
 
-Icinga 2 and the Icinga 2 documentation are licensed under the terms of the GNU
-General Public License Version 2. You will find a copy of this license in the
-LICENSE file included in the source package.
 
-## Support  <a id="support"></a>
+![Icinga 2 Distributed Master and Satellites with Agents](images/distributed-monitoring/icinga2_distributed_monitoring_scenarios_master_satellites_agents.png)
+
+## Start with Icinga <a id="start-icinga"></a>
+
+* [Installation](02-installation.md#installation)
+* [Monitoring Basics](03-monitoring-basics.md#monitoring-basics)
+* [Configuration](04-configuration.md#configuration)
+* [Distributed Monitoring](06-distributed-monitoring.md#distributed-monitoring)
+* [Addons, Integrations and Features](13-addons.md#addons)
+* [Troubleshooting](15-troubleshooting.md#troubleshooting)
+* [Upgrading](16-upgrading-icinga-2.md#upgrading-icinga-2)
+
+Once Icinga Core and Web are running in your distributed environment,
+make sure to check out the many [Icinga modules](https://icinga.com/docs/)
+for even better monitoring.
+
+## What's New <a id="whats-new"></a>
+
+You can follow the development and release milestones on [GitHub](https://github.com/icinga/icinga2/issues).
+Please follow our release announcements on [icinga.com](https://icinga.com/blog/) too.
+
+## Support <a id="support"></a>
 
 Check the project website at [icinga.com](https://icinga.com) for status updates. Join the
 [community channels](https://icinga.com/community/) for questions
-or ask an Icinga partner for [professional support](https://icinga.com/services/support/).
+or get in touch for [professional support](https://icinga.com/subscription/).
 
 ## Contribute  <a id="contribute"></a>
 
@@ -40,7 +59,10 @@ The Git repository is located on [GitHub](https://github.com/Icinga/icinga2).
 Icinga 2 is written in C++ and can be built on Linux/Unix and Windows.
 Read more about development builds in the [development chapter](21-development.md#development).
 
-## What's New <a id="whats-new"></a>
 
-The Icinga 2 Changelog is located [here](https://github.com/Icinga/icinga2/blob/master/CHANGELOG.md).
-Please follow our release announcements on [icinga.com](https://icinga.com/blog/) too.
+## License <a id="license"></a>
+
+Icinga 2 and the Icinga 2 documentation are licensed under the terms of the GNU
+General Public License Version 2. You will find a copy of this license in the
+LICENSE file included in the source package.
+

diff --git a/doc/04-configuration.md b/doc/04-configuration.md
index 690c80ca2e6b7c73e339da4a192db460404807df..4d4fd053b5452a4d342178572cc1bc43c2175055 100644 (file)
--- a/doc/04-configuration.md
+++ b/doc/04-configuration.md
@@ -1,4 +1,4 @@
-# Configuration: First Steps <a id="configuration-first-steps"></a>
+# Configuration: First Steps <a id="configuration"></a>
 
 This chapter provides an introduction into best practices for your Icinga 2 configuration.
 The configuration files which are automatically created when installing the Icinga 2 packages