diff --git a/mba-main.org b/mba-main.org
index 434840b..bda0065 100644
--- a/mba-main.org
+++ b/mba-main.org
@@ -20,3 +20,6 @@
 *** [[./mba/ch18.org][Chapter 18. What is VC, How to Raise Money, Get Board of Advisors]]
 *** [[./mba/ch19.org][Chapter 19. Recap]]
 *** [[./mba/ch20.org][Chapter 20. Sales technique]]
+
+** Section 4 - Venture Capital part 2: Security/ Legal Structures to Protect you and make you more money
+*** [[./mba/ch23.org][Chapter 23. VC History Review]]