Added some links.

README.md

@@ -12,21 +12,27 @@ We're building it with workers, so it will scale.
 
 ## Overview
 
+A complete Matrix environment consists of many parts. Other than the Matrix
+server itself (Synapse) there are all kinds of other things that we need:
+
 * [Synapse](https://element-hq.github.io/synapse/latest/)
-* Webclient
-* Element Call
+* Webclient ([Element Web](https://github.com/element-hq/element-web))
+* [Element Call](https://github.com/element-hq/element-call) for audio/video
+conferencing
 * Management with [Synapse-Admin](https://github.com/Awesome-Technologies/synapse-admin)
 * Moderation with [Draupnir](https://github.com/the-draupnir-project/Draupnir)
 * [Consent
 tracking](https://element-hq.github.io/synapse/latest/consent_tracking.html)
 * Authentication via
 [OpenID](https://element-hq.github.io/synapse/latest/openid.html)
-* Several bridges
+* Several [bridges](https://matrix.org/ecosystem/bridges/)
 
 
 # Synapse
 
-Configuration is documented under [synapse](synapse).
+This is the core component: the Matrix server itself.
+
+Installation and configuration is documented under [synapse](synapse).
 
 
 # TURN