diff --git a/README.md b/README.md
index 9c644e1..ba15830 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,20 @@
-# strands
+# Strands
+
+Unity prototypes.
+
+Download and install Unity:
+
+Go to https://unity3d.com/get-unity/update and click `Download Installer`.  
+
+Latest version is usually recommended, otherwise read the project description to install a compatible Unity version.
+
+# String Theory
+
+In Unity click `Open` and select the `String Theory` directory at the root of this repository.
+
+* Tested with version 2018.2.1f
+
+# Development
 
 Como hacer fork del repo:
 https://blog.scottlowe.org/2015/01/27/using-fork-branch-git-workflow/