diff --git a/marketing-knowledge.org b/marketing-knowledge.org
index 8f9fe02..4d961de 100644
--- a/marketing-knowledge.org
+++ b/marketing-knowledge.org
@@ -14,6 +14,7 @@ Link: [[https://youtu.be/QIQYzi7IPGk?si=BK4tOS2EBDumkHtZ&t=1][30 Years of Market
 4. [[./_subsections/marketing-knowledge/social.org][Social Marketing]]
 5. [[./_subsections/marketing-knowledge/profitable.org][Profitable Marketing]]
 6. [[./_subsections/marketing-knowledge/partner.org][Partner Marketing]]
+7. [[./_subsections/marketing-knowledge/data.org][Data Marketing]]
 
 * Contents
 #+attr_html: :class contents
@@ -21,8 +22,8 @@ Link: [[https://youtu.be/QIQYzi7IPGk?si=BK4tOS2EBDumkHtZ&t=1][30 Years of Market
  - [[https://youtu.be/QIQYzi7IPGk?si=E-j1eo3pAqvCQJbn&t=112][01:50 Hustle Marketing]]
  - [[https://youtu.be/QIQYzi7IPGk?si=mI6BeGIH_CMz2Cx9&t=371][06:11 Community marketing]]
  - [[https://youtu.be/QIQYzi7IPGk?si=zd0AGcjKoAlInyGV&t=720][12:00 Social marketing]]
- - [[https://youtu.be/QIQYzi7IPGk?si=iHghg-kvqH1rZemS&t=1032][17:12 Profitable Marketing]] *current*
+ - [[https://youtu.be/QIQYzi7IPGk?si=iHghg-kvqH1rZemS&t=1032][17:12 Profitable Marketing]]
  - [[https://youtu.be/QIQYzi7IPGk?si=ro_r9JrriqdGJs2M&t=1456][24:14 Partner Marketing]]
- - [[https://youtu.be/QIQYzi7IPGk?si=acmLYs_MLxzE-Gf5&t=1937][32:15 Data Marketing]]
+ - [[https://youtu.be/QIQYzi7IPGk?si=acmLYs_MLxzE-Gf5&t=1937][32:15 Data Marketing]] *current*
  - [[https://youtu.be/QIQYzi7IPGk?si=qQjo0XqWwSf8r0tt&t=2279][37:58 PR Marketing]]
  - [[https://youtu.be/QIQYzi7IPGk?si=RPJ9rDZyY8O9Rcat&t=2701][45:00 Brand Marketing]]