diff --git a/Days/day42.md b/Days/day42.md
index 1428594..3be4732 100644
--- a/Days/day42.md
+++ b/Days/day42.md
@@ -122,5 +122,6 @@ A container image is a lightweight, standalone, executable package of software t
 
 - [TechWorld with Nana - Docker Tutorial for Beginners](https://www.youtube.com/watch?v=3c-iBn73dDE)
 - [Programming with Mosh - Docker Tutorial for Beginners](https://www.youtube.com/watch?v=pTFZFxd4hOI)
+- [Docker Tutorial for Beginners - What is Docker? Introduction to Containers](https://www.youtube.com/watch?v=17Bl31rlnRM&list=WL&index=128&t=61s)
 
 See you on [Day 43](day43.md) 
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