diff --git a/README.md b/README.md
index 5d0debc..3189a83 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,20 @@
 ddns
 ====
 
-A self-hosted Dynamic DNS solution similar to DynDNS or NO-IP
+A self-hosted Dynamic DNS solution similar to DynDNS or NO-IP.
+
+You can use a hosted version at [ddns.pboehm.org](http://ddns.pboehm.org/) where you can register a host under the `d.pboehm.de` domain (e.g `test.d.pboehm.de`).
+
+## How can I update my IP if it changes?
+
+`ddns` is built around a small webservice, so that you can update your IP address, simply by calling an URL periodically through `curl` (using `cron`). Hosts that haven't been updated for 10 days will be automatically removed. This can be configured in your own instance.
+
+An API similar to DynDNS/NO-IP hasn't been implemented yet.
+
+## Requirements for self-hosting
+
+* A custom domain where the registrar allows NS-Records for subdomains
+* A global accessible Server running an OS which is supported by the tools listed below
+* A running [Redis](http://redis.io) instance for data storage
+* An installation of [PowerDNS](https://www.powerdns.com/) with the Pipe-Backend included
+* [Go](http://golang.org/) 1.3