diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 945102e..79a9a23 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -7,10 +7,18 @@
 
 - [Guessing Game Tutorial](ch02-01-guessing-game-tutorial.md)
 
-- [Understanding Ownership](ch04-01-understanding-ownership.md)
-    - [Ownership](ch04-02-ownership.md)
-    - [References & Borrowing](ch04-03-references-and-borrowing.md)
-    - [Slices](ch04-04-slices.md)
+- [Understanding Ownership](ch03-01-understanding-ownership.md)
+    - [Ownership](ch03-02-ownership.md)
+    - [References & Borrowing](ch03-03-references-and-borrowing.md)
+    - [Slices](ch03-04-slices.md)
+
+- [Up and Running](ch04-01-up-and-running.md)
+    - [Anatomy of a Rust Program](ch04-02-anatomy-of-a-rust-program.md)
+    - [Variable Bindings in Detail](ch04-03-variable-bindings-in-detail.md)
+    - [Data Types in Rust](ch04-04-data-types-in-rust.md)
+    - [How Functions Work](ch04-05-how-functions-work.md)
+    - [Comments](ch04-06-comments.md)
+    - [Control Flow](ch04-07-control-flow.md)
 
 - [Structs](ch05-01-structs.md)
     - [Method Syntax](ch05-02-method-syntax.md)
diff --git a/src/ch04-01-understanding-ownership.md b/src/ch03-01-understanding-ownership.md
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diff --git a/src/ch04-03-references-and-borrowing.md b/src/ch03-03-references-and-borrowing.md
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diff --git a/src/ch04-04-slices.md b/src/ch03-04-slices.md
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diff --git a/src/ch03-01-up-and-running.md b/src/ch04-01-up-and-running.md
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diff --git a/src/ch03-02-anatomy-of-a-rust-program.md b/src/ch04-02-anatomy-of-a-rust-program.md
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diff --git a/src/ch03-03-variable-bindings-in-detail.md b/src/ch04-03-variable-bindings-in-detail.md
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diff --git a/src/ch03-04-data-types-in-rust.md b/src/ch04-04-data-types-in-rust.md
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diff --git a/src/ch03-05-how-functions-work-in-rust.md b/src/ch04-05-how-functions-work.md
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diff --git a/src/ch03-06-comments.md b/src/ch04-06-comments.md
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diff --git a/src/ch03-07-control-flow.md b/src/ch04-07-control-flow.md
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rename to src/ch04-07-control-flow.md