diff --git a/docs/chapter-1/README.md b/docs/chapter-1/README.md
index 5009be6..2f08e61 100644
--- a/docs/chapter-1/README.md
+++ b/docs/chapter-1/README.md
@@ -1,5 +1,5 @@
 ---
-nav_order: 3
+nav_order: 2
 has_children: true
 permalink: /chapter-1
 ---
diff --git a/docs/section-1.md b/docs/chapter-2.md
similarity index 99%
rename from docs/section-1.md
rename to docs/chapter-2.md
index eda751a..e417a8a 100644
--- a/docs/section-1.md
+++ b/docs/chapter-2.md
@@ -1,5 +1,5 @@
 ---
-nav_order: 2
+nav_order: 3
 ---
 # Section 1
 {: .no_toc }
diff --git a/docs/section-2.md b/docs/chapter-3.md
similarity index 100%
rename from docs/section-2.md
rename to docs/chapter-3.md
diff --git a/docs/chapter-2/README.md b/docs/chapter-4/README.md
similarity index 100%
rename from docs/chapter-2/README.md
rename to docs/chapter-4/README.md
diff --git a/docs/chapter-2/section-1.md b/docs/chapter-4/section-1.md
similarity index 100%
rename from docs/chapter-2/section-1.md
rename to docs/chapter-4/section-1.md
diff --git a/docs/chapter-2/section-2.md b/docs/chapter-4/section-2.md
similarity index 100%
rename from docs/chapter-2/section-2.md
rename to docs/chapter-4/section-2.md