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--- a/README.md
+++ b/README.md
@@ -1,2 +1,37 @@
-# zeit
-Zeit.
+zeit
+----
+
+Zeit erfassen. A command line tool for tracking time spent on tasks & projects.
+
+## Build
+
+```
+make
+```
+
+## Usage
+
+### Start tracking
+
+```
+zeit track --help
+```
+
+Example:
+
+```
+zeit track --project project --task task --begin -0:15
+```
+
+### Finish tracking
+
+```
+zeit finish --help
+```
+
+Example:
+
+```
+zeit finish
+```
+