diff --git a/Basic_shell/README.md b/Basic_shell/README.md
index 4bd13eac..f326fa1e 100644
--- a/Basic_shell/README.md
+++ b/Basic_shell/README.md
@@ -28,12 +28,12 @@ This repository has teaching materials for a **2-3 hour**, hands-on **Introducti
 
 | Lessons            | Estimated Duration |
 |:------------------------|:----------|
-|[Why Shell?]() | 15 min |
-|[Acessing the Shell](Lesson1_Acesssingtheshell.md) | 15 min |
-|[Moving around and basics](Lesson2_basics.md) | 45 min |
-|[Creating Files and Searching](Lesson3_creatingfiles.md) | 45 min |
-|[Shell Scripts](Lesson4_shellscripts.md) | 20 min |
-|[Preview of other modules](Lesson5_tocome.md) | 15 min |
+|[Why Shell?](/lectures/Intro_to_basic_shell_noextraslides.pdf) | 15 min |
+|[Acessing the Shell](01_setting_up.md) | 15 min |
+|[Moving around and basics](02_shell_basics.md) | 45 min |
+|[Creating Files and Searching](03_creating_files.md) | 45 min |
+|[Shell Scripts](04_shell_scripts.md) | 20 min |
+|[Preview of other modules](/lectures/Wrapup_basic_shell.pdf) | 15 min |