diff --git a/resources.md b/resources.md
index bbf9f69ac7771faef3c77d2454e7d002989c2fa4..1323d22383108e9f6e23ee2c8e77826d6da94d56 100644
--- a/resources.md
+++ b/resources.md
@@ -17,3 +17,4 @@
 - https://www.git-tower.com/learn/git/ebook/en/command-line/introduction#start
 - https://try.github.io/levels/1/challenges/1
 - https://betterexplained.com/articles/a-visual-guide-to-version-control/
+- https://ellisp.github.io/blog/2016/09/16/version-control