diff --git a/README.md b/README.md
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-# Today's Tutorial [April 20, 2026]
-## Lesson 165: ARM-64 Course (Part 2 - Development Setup)
-In this lesson we will discuss how to set up our development in 64-bit ARM with Kali Linux.
+# Today's Tutorial [April 21, 2026]
+## Lesson 166: ARM-64 Course (Part 3 - "Hello World")
+In this lesson we will discuss how to write and compile a simple hello world program in C++.
 
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