diff --git a/README.md b/README.md
index 9d5257c..a0ce45a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,18 @@
 # Dual
 
+Dual is a simple management tool that allows you to create custom hostnames for dynamic IP address locally.
+
+## Running Dual
+
+Make sure your configuration file [cfg/gen.cfg](cfg/gen.cfg) is correct before running this program.
+
+```sh
+$ java -jar Dual.jar
+```
+
+## Building Dual
+
+```sh
+$ make
+```
+