diff --git a/bookmark.md b/bookmark.md
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--- a/bookmark.md
+++ b/bookmark.md
@@ -1,2 +1,2 @@
 ## Left off: 
-### 3rd edition - Chapter 3 - Pg 45 - 3-8 Seeing the World - Try it yourself 
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+### Chapter 4 - Pg 49 - Working with Lists
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