diff --git a/readme.md b/readme.md
index 62edf61..eeb2db2 100644
--- a/readme.md
+++ b/readme.md
@@ -3,7 +3,7 @@
 **Table of content**
 
 - [Unit 1: course content](unit1_course_content.md)
-- Unit 2: Building a Spring Boot Web App
+- [Unit 2: Building a Spring Boot Web App](unit2_building_spring_boot_webapp.md)
 
 
 
@@ -11,4 +11,6 @@
 
 Session 1 - 26/10/2022 - stoped reading [@here](https://sparkers.udemy.com/course/spring-framework-5-beginner-to-guru/learn/lecture/7577382#overview)
 
-Session 2 - 27/10/2022 - finished unit 1
\ No newline at end of file
+Session 2 - 27/10/2022 - finished unit 1
+
+Session 3 - 28/10/2022 - ended [@here](https://sparkers.udemy.com/course/spring-framework-5-beginner-to-guru/learn/practice/1161612#overview)
\ No newline at end of file
diff --git a/unit1_course_content.md b/unit1_course_content.md
index ea2313f..338ca60 100644
--- a/unit1_course_content.md
+++ b/unit1_course_content.md
@@ -79,7 +79,7 @@ While the new WebFlux module brings us some exciting new capabilities,  traditio
 
 ### Getting help with the Spring Framework
 
-- 1- there sis a Q&A section under the video in Udemy
+- 1- there is a Q&A section under the video in Udemy
 - 2- link to the course wiki https://github.com/springframeworkguru/spring5webapp/wiki
 
 **Tips**: from IntelliJ you can create a gist (right click + create a gist).
@@ -93,3 +93,4 @@ While the new WebFlux module brings us some exciting new capabilities,  traditio
 Session 2 - 27/10/2022
 
 <hr>
+
diff --git a/unit2_building_spring_boot_webapp.md b/unit2_building_spring_boot_webapp.md
index 538e84d..ad20469 100644
--- a/unit2_building_spring_boot_webapp.md
+++ b/unit2_building_spring_boot_webapp.md
@@ -37,8 +37,16 @@ Create a simple webapp with: https://start.spring.io/
 
 For a maven project: ***From Existing source > Select the pom.xml*** file at the root of the project
 
+Look at currated dependencies in the pom.xml by ctrl+click on the `parent.artifactId`
+
+From the currated dependancies you can omit the version when you add them to your pom.xml because they are references in `spring-boot-parent-2.x.x.RELEASE.pom`
+
 
 
 Session 3 - 28/10/2022 - ended here
 
-<hr>
\ No newline at end of file
+<hr>
+
+
+
+***Session 4 - 30/10/2022 : [Starts from here](https://sparkers.udemy.com/course/spring-framework-5-beginner-to-guru/learn/lecture/17789252#overview) Github workflow.***
\ No newline at end of file