diff --git a/README.md b/README.md
index 0c991e0..b836078 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,32 @@
-# rust-doh
+# doh-proxy
 
-A toy DNS-over-HTTP server proxy.
+A DNS-over-HTTP server proxy in Rust.
+
+## Usage
+
+```
+doh-proxy
+A DNS-over-HTTP server proxy
+
+USAGE:
+    doh-proxy [OPTIONS]
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+
+OPTIONS:
+    -l, --listen_address <listen_address>            Address to listen to [default: 127.0.0.1:3000]
+    -b, --local_bind_address <local_bind_address>    Address to connect from [default: 0.0.0.0:0]
+    -c, --max_clients <max_clients>                  Maximum number of simultaneous clients [default: 512]
+    -u, --server_address <server_address>            Address to connect to [default: 9.9.9.9:53]
+    -t, --timeout <timeout>                          Timeout, in seconds [default: 10]
+```
+
+## Limitations
+
+Only support `POST` queries. `GET` queries are too noisy in log files, including when they are not yours.
+
+Serves HTTP requests only. DoH is mostly useful to leverage an existing webserver, so just configure your webserver to proxy connections to this.
+
+Path is `/dns-query`.