diff --git a/README.md b/README.md
index 19b5447..21d4a9b 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,6 @@ you need a Go environment. Use these commands to install the programs.
     go get -u github.com/pstuifzand/ekster/cmd/eksterd
     go get -u github.com/pstuifzand/ekster/cmd/ek
 
-
 ### `eksterd`
 
 The command `eksterd` is the main server program. It will run a Microsub server.
@@ -34,6 +33,27 @@ The command `ek` is the command line client for Microsub server. It is able to
 call the different functions of the Microsub server. It isn't needed to use `eksterd`, but
 it can be useful. It can also be used with other servers that implement Microsub.
 
+## backend.json
+
+The `backend.json` file contains all information about channels, feeds and authentication.
+When the server is not running you can make changes to this file to add or remove feeds.
+This is not the easiest way, but it's possible.
+
+When generating this file for the first time. It will contain a default
+configuration. This can be changed (and perhaps should be changed).
+The two parts that should be changed are:
+
+   "Me": "...",
+   "TokenEndpoint": "...",
+
+
+The `Me` value should be set to the URL you use to sign into Monocle, or
+Micropub client.
+
+`TokenEndpoint` should be the `token_endpoint` you use for that domain,
+`ekster` will check every 10 minutes, if the token is still valid. This could
+be retrieved automatically, but this doesn't happen at the moment.
+
 ## Using Docker / Docker Compose
 
 It's now also possible to use docker-compose to start a ekster server.