diff --git a/go.html.markdown b/go.html.markdown
index 88c98c21..088d4fe6 100644
--- a/go.html.markdown
+++ b/go.html.markdown
@@ -378,7 +378,7 @@ There you can follow the tutorial, play interactively, and read lots.
The language definition itself is highly recommended. It's easy to read
and amazingly short (as language definitions go these days.)
-You can play around with the code on [Go playground](https://play.golang.org/p/tnWMjr16Mm). Try to change it and run it from your browser!
+You can play around with the code on [Go playground](https://play.golang.org/p/tnWMjr16Mm). Try to change it and run it from your browser! Note that you can use [https://play.golang.org](https://play.golang.org) as a [REPL](https://en.wikipedia.org/wiki/Read-eval-print_loop) to test things and code in your browser, without even installing Go.
On the reading list for students of Go is the [source code to the standard
library](http://golang.org/src/pkg/). Comprehensively documented, it