Updated README.md

README.md

@@ -4,7 +4,9 @@ Playing with Golang mostly using the Head First Go book.
 
 Entry point is playground.go.
 
-To run use
+To run the playground use
 ```sh
+cd playground
 go run trying_out_go
 ```
+For any other folders, these are all separate go programs. Use the commands above and edit playground and trying_out_go to the matching folder name.