diff --git a/_subsections/marketing-knowledge/data.org b/_subsections/marketing-knowledge/data.org
index b042c4d..dda826b 100644
--- a/_subsections/marketing-knowledge/data.org
+++ b/_subsections/marketing-knowledge/data.org
@@ -11,3 +11,62 @@
 - [[https://youtu.be/QIQYzi7IPGk?si=acmLYs_MLxzE-Gf5&t=1937][32:15 Data Marketing]]
 
 * Notes
+
+** what is about
+- understanding your client
+  - where they live
+  - hang out
+  - how they are acting
+
+** email marketing
+- people sign up
+- ask them why they signed up
+- target them with relevant information
+
+** seo marketing
+- what are people
+  - looking for
+  - searching for
+- make sure you are optimized for that search
+
+*** example - HR Recruitment
+- company had a domain 'human-resources-recruitment'
+- but the domain didn't have the letters "HR" in it which is the name of the company
+- got them a domain with the actual name
+
+*** rankings
+- what is google ranking on
+- what is your ranking
+- how do you turn up in those searches
+
+** referal marketing
+- customer 1
+  - your customer
+  - happy
+  - has a customer 2 who is his customer
+- target customer 1 to promote your product to customer 2
+  - help them understand what your customer is
+  - show them how you can benefit them
+
+*** example - yelp reviewer
+- someone gives you a good review on yelp
+- you approach them and say
+  - thanks
+  - i'll pay you a percentage to promote this to your community
+
+** billboards
+- doesn't have to be billboards
+- it means using an ad that people will see
+
+*** example
+- ads on drink coasters
+  - branded
+- wanted brands to advertising on the coasters
+- put up a giant billboard outside the building with all the advertisers
+- the advertisers thought it was for a giant company
+- they got a lot of clients from the advertising agencies
+
+** targeting ads
+- paid ads on youtube
+- ads are targeted towards client base
+- you want to calculate the cost for ad to profit
diff --git a/_subsections/marketing-knowledge/pr.org b/_subsections/marketing-knowledge/pr.org
new file mode 100644
index 0000000..ab28324
--- /dev/null
+++ b/_subsections/marketing-knowledge/pr.org
@@ -0,0 +1,13 @@
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../../../../_share/media/css/org-mode.css" />
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../../../../_share/media/css/business.css" />
+#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="../../../_share/media/css/simon-squib.css" />
+#+HTML_HEAD: <script src="../../../../../_share/media/js/collapsible.js"></script>
+#+title: marketing knowledge: pr marketing
+
+
+[[../../marketing-knowledge.org][<Back to Main Contents]]
+
+* Links
+- [[https://youtu.be/QIQYzi7IPGk?si=qQjo0XqWwSf8r0tt&t=2279][37:58 PR Marketing]]
+
+* Notes
diff --git a/marketing-knowledge.org b/marketing-knowledge.org
index 4d961de..dc8ba9a 100644
--- a/marketing-knowledge.org
+++ b/marketing-knowledge.org
@@ -5,7 +5,9 @@
 
 #+title: 30 Years of Marketing Knowledge in 53 Minutes
 
-Link: [[https://youtu.be/QIQYzi7IPGk?si=BK4tOS2EBDumkHtZ&t=1][30 Years of Marketing Research]]
+* Links
+- [[../../course-listings.org][Course Listing]]
+- [[https://youtu.be/QIQYzi7IPGk?si=BK4tOS2EBDumkHtZ&t=1][30 Years of Marketing Research]]
 
 * Notes
 1. [[./_subsections/marketing-knowledge/intro.org][intro]]
@@ -15,6 +17,8 @@ Link: [[https://youtu.be/QIQYzi7IPGk?si=BK4tOS2EBDumkHtZ&t=1][30 Years of Market
 5. [[./_subsections/marketing-knowledge/profitable.org][Profitable Marketing]]
 6. [[./_subsections/marketing-knowledge/partner.org][Partner Marketing]]
 7. [[./_subsections/marketing-knowledge/data.org][Data Marketing]]
+8. [[./_subsections/marketing-knowledge/pr.org][PR Marketing]]
+
 
 * Contents
 #+attr_html: :class contents
@@ -24,6 +28,6 @@ Link: [[https://youtu.be/QIQYzi7IPGk?si=BK4tOS2EBDumkHtZ&t=1][30 Years of Market
  - [[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]]
  - [[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]] *current*
- - [[https://youtu.be/QIQYzi7IPGk?si=qQjo0XqWwSf8r0tt&t=2279][37:58 PR Marketing]]
+ - [[https://youtu.be/QIQYzi7IPGk?si=acmLYs_MLxzE-Gf5&t=1937][32:15 Data Marketing]]
+ - [[https://youtu.be/QIQYzi7IPGk?si=qQjo0XqWwSf8r0tt&t=2279][37:58 PR Marketing]] *current*
  - [[https://youtu.be/QIQYzi7IPGk?si=RPJ9rDZyY8O9Rcat&t=2701][45:00 Brand Marketing]]