diff --git a/README.md b/README.md
index 34190a9..ea1cdbb 100644
--- a/README.md
+++ b/README.md
@@ -249,6 +249,10 @@ At the moment this is not useful for anyone but myself, if at some point I find
           * [Virtual Memory, Disk Devices](https://minnie.tuhs.org/CompArch/Lectures/week10.html)
           * [Filesystems & Their Performance](https://minnie.tuhs.org/CompArch/Lectures/week11.html)
           * [IPC, Synchronisation and Threads](https://minnie.tuhs.org/CompArch/Lectures/week12.html)
+       * File Descriptor
+         * [File Descriptors Explained](https://www.youtube.com/watch?v=KM5sRWAYqaw) 📼 🆓
+         * [File Descriptors, Unix sockets and other POSIX wizardry - Christian Heimes](https://www.youtube.com/watch?v=Ftg8fjY_YWU) 📼 🆓
+         * ["Everything is a file" in UNIX](https://www.youtube.com/watch?v=dDwXnB6XeiA) 📼 🆓
        * Threads
          * ["An Introduction to Programming with Threads"](https://s3.amazonaws.com/content.udacity-data.com/courses/ud923/references/ud923-birrell-paper.pdf) by Birrell 📰 🆓
          * POSIX Threads (PThreads)