diff --git a/README.md b/README.md
index 649a91b..160fdf5 100644
--- a/README.md
+++ b/README.md
@@ -6,3 +6,13 @@ name, which
 [Michael Nygard suggested](https://twitter.com/mtnygard/status/1249781530219642883)
 as a name for a FORTH implementation
 at exactly the same time that I happened to be writing this code.
+
+## Running SallyForth
+
+SallyForth is writting in Python 3 and will happily run with
+either the standard C Python implementation or Pypy. To
+run SallyForth just kick off the sallyforth.py file:
+
+````
+$ python sallyforth/sallyforth.py
+````