diff --git a/apache-poi/README.md b/apache-poi/README.md
index 599b21e063..d500787536 100644
--- a/apache-poi/README.md
+++ b/apache-poi/README.md
@@ -11,3 +11,4 @@ This module contains articles about Apache POI
 - [Get String Value of Excel Cell with Apache POI](https://www.baeldung.com/java-apache-poi-cell-string-value)
 - [Read Excel Cell Value Rather Than Formula With Apache POI](https://www.baeldung.com/apache-poi-read-cell-value-formula)
 - [Setting Formulas in Excel with Apache POI](https://www.baeldung.com/java-apache-poi-set-formulas)
+- [Insert a Row in Excel Using Apache POI](https://www.baeldung.com/apache-poi-insert-excel-row)
diff --git a/core-java-modules/core-java-collections-4/README.md b/core-java-modules/core-java-collections-4/README.md
index 6e117c98b1..4fd77473d4 100644
--- a/core-java-modules/core-java-collections-4/README.md
+++ b/core-java-modules/core-java-collections-4/README.md
@@ -5,3 +5,4 @@
 ### Relevant Articles: 
 
 - [ArrayList vs. LinkedList vs. HashMap in Java](https://www.baeldung.com/java-arraylist-vs-linkedlist-vs-hashmap)
+- [Java Deque vs. Stack](https://www.baeldung.com/java-deque-vs-stack)
diff --git a/core-java-modules/core-java-collections-maps-3/README.md b/core-java-modules/core-java-collections-maps-3/README.md
index 8b84ecbf81..530a9310c2 100644
--- a/core-java-modules/core-java-collections-maps-3/README.md
+++ b/core-java-modules/core-java-collections-maps-3/README.md
@@ -8,4 +8,5 @@ This module contains articles about Map data structures in Java.
 - [The Map.computeIfAbsent() Method](https://www.baeldung.com/java-map-computeifabsent)
 - [Collections.synchronizedMap vs. ConcurrentHashMap](https://www.baeldung.com/java-synchronizedmap-vs-concurrenthashmap)
 - [Java HashMap Load Factor](https://www.baeldung.com/java-hashmap-load-factor)
+- [Converting java.util.Properties to HashMap](https://www.baeldung.com/java-convert-properties-to-hashmap)
 - More articles: [[<-- prev]](/core-java-modules/core-java-collections-maps-2)
diff --git a/core-java-modules/core-java-security-2/README.md b/core-java-modules/core-java-security-2/README.md
index 9b99d624c9..3f9520b888 100644
--- a/core-java-modules/core-java-security-2/README.md
+++ b/core-java-modules/core-java-security-2/README.md
@@ -15,4 +15,5 @@ This module contains articles about core Java Security
 - [Security Context Basics: User, Subject and Principal](https://www.baeldung.com/security-context-basics)
 - [Java AES Encryption and Decryption](https://www.baeldung.com/java-aes-encryption-decryption)
 - [InvalidAlgorithmParameterException: Wrong IV Length](https://www.baeldung.com/java-invalidalgorithmparameter-exception)
+- [The java.security.egd JVM Option](https://www.baeldung.com/java-security-egd)
 - More articles: [[<-- prev]](/core-java-modules/core-java-security)
diff --git a/java-collections-maps-3/README.md b/java-collections-maps-3/README.md
index bd1029c9cf..9b1d8510c2 100644
--- a/java-collections-maps-3/README.md
+++ b/java-collections-maps-3/README.md
@@ -3,3 +3,4 @@
 - [Java Map With Case-Insensitive Keys](https://www.baeldung.com/java-map-with-case-insensitive-keys)
 - [Using a Byte Array as Map Key in Java](https://www.baeldung.com/java-map-key-byte-array)
 - [Using the Map.Entry Java Class](https://www.baeldung.com/java-map-entry)
+- [Optimizing HashMap’s Performance](https://www.baeldung.com/java-hashmap-optimize-performance)
diff --git a/jmeter/README.md b/jmeter/README.md
index 11351ffdda..53aca8d34b 100644
--- a/jmeter/README.md
+++ b/jmeter/README.md
@@ -52,3 +52,4 @@ Enjoy it :)
 
 - [Intro to Performance Testing using JMeter](https://www.baeldung.com/jmeter)
 - [Configure Jenkins to Run and Show JMeter Tests](https://www.baeldung.com/jenkins-and-jmeter)
+- [Write Extracted Data to a File Using JMeter](https://www.baeldung.com/jmeter-write-to-file)
diff --git a/spring-boot-modules/spring-boot-mvc-jersey/README.md b/spring-boot-modules/spring-boot-mvc-jersey/README.md
index 07f9e78ea6..192658c4a5 100644
--- a/spring-boot-modules/spring-boot-mvc-jersey/README.md
+++ b/spring-boot-modules/spring-boot-mvc-jersey/README.md
@@ -5,4 +5,4 @@ This module contains articles about Spring Boot: JAX-RS vs Spring
 
 ### Relevant Articles: 
 
-- [REST API: JAX-RS vs Spring](https://www.baeldung.com/TBD)
+- [REST API: JAX-RS vs Spring](https://www.baeldung.com/rest-api-jax-rs-vs-spring)
diff --git a/testing-modules/zerocode/README.md b/testing-modules/zerocode/README.md
new file mode 100644
index 0000000000..a0a844c63d
--- /dev/null
+++ b/testing-modules/zerocode/README.md
@@ -0,0 +1,3 @@
+### Relevant Articles:
+
+- [Introduction to ZeroCode](https://www.baeldung.com/zerocode-intro)