diff --git a/courses/free-courses-id.md b/courses/free-courses-id.md
index a35d7e5ce..0c7b6268d 100644
--- a/courses/free-courses-id.md
+++ b/courses/free-courses-id.md
@@ -1,6 +1,7 @@
 ### Index
 
 * [Android](#android)
+* [Apache Kafka](#apache-kafka)
 * [AR / VR](#ar--vr)
 * [C / C++](#c--c)
 * [C#](#c)
@@ -12,6 +13,7 @@
 * [Flutter](#flutter)
 * [Git](#git)
 * [Go](#go)
+* [Gradle](#gradle)
 * [HTML / CSS](#html--css)
 * [Java](#java)
   * [Spring](#spring)
@@ -52,6 +54,11 @@
 * [Tutorial Dasar Android Studio Bahasa Indonesia](https://www.udemy.com/course/tutorial-dasar-android-studio-bahasa-indonesia-gratis) - Udemy
 
 
+### Apache Kafka
+
+* [Belajar Apache Kafka untuk Pemula](https://www.youtube.com/playlist?list=PL-CtdCApEFH8dJMuQGojbjUdLEty8mqYF) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
+
+
 ### AR / VR
 
 * [Belajar Membuat Mixed Reality](https://www.dicoding.com/academies/155) - Dicoding, membutuhkan registrasi
@@ -86,6 +93,8 @@
 
 ### Desain dan Arsitektur
 
+* [Belajar Design Patterns untuk Pemula](https://www.youtube.com/playlist?list=PL-CtdCApEFH_yiziXrQeogYOJzCmD8XLM) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
+* [Belajar Microservices untuk Pemula](https://www.youtube.com/playlist?list=PL-CtdCApEFH-MtoBwQ0F3xNG21yjt5Kvs) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
 * [Belajar Prinsip Pemrograman SOLID](https://www.dicoding.com/academies/169) - Dicoding, membutuhkan registrasi
 
 
@@ -124,6 +133,12 @@
 * [Belajar Go-Lang untuk Pemula](https://www.youtube.com/playlist?list=PL-CtdCApEFH_t5_dtCQZgWJqWF45WRgZw) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
 * [Belajar Golang Basic Bahasa Indonesia](https://www.youtube.com/playlist?list=PLCZlgfAG0GXDztO-BFc9R5afhP26Dhsgm) - Sekolah Koding
 * [Golang Fundamental](https://buildwithangga.com/kelas/golang-fundamental?thumbnail=nk4neM2UyG.54&main_leads=browse) - BuildWithAngga
+* [Golang Tutorial - Bahasa Indonesia](https://www.youtube.com/playlist?list=PL-CtdCApEFH-0i9dzMzLw6FKVrFWv3QvQ) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
+
+
+### Gradle
+
+* [Belajar Gradle](https://www.youtube.com/playlist?list=PL-CtdCApEFH8yGJzfU_gners0ybO4MlrV) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
 
 
 ### HTML / CSS
@@ -163,6 +178,7 @@
 * [Dasar Pemrograman dengan JavaScriipt](https://www.youtube.com/playlist?list=PLFIM0718LjIWXagluzROrA-iBY9eeUt4w) - Web Programming UNPAS
 * [JavaScript dan DOM (Document Object Model)](https://www.youtube.com/playlist?list=PLFIM0718LjIWB3YRoQbQh82ZewAGtE2-3) - Web Programming UNPAS
 * [JavaScript Lanjutan](https://www.youtube.com/playlist?list=PLFIM0718LjIUGpY8wmE41W7rTJo_3Y46-) - Web Programming UNPAS
+* [JavaScript Tutorial Bahasa Indonesia](https://www.youtube.com/playlist?list=PL-CtdCApEFH8SS0Gsj9_a0cC0jypFEoSg) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
 * [Main Main JavaScript](https://www.youtube.com/playlist?list=PLCZlgfAG0GXCyd70hT8jYl24bLuPpH9iR) - Sekolah Koding
 
 
@@ -253,6 +269,7 @@
 * [Membuat Aplikasi MVC dengan PHP](https://www.youtube.com/playlist?list=PLFIM0718LjIVEh_d-h5wAjsdv2W4SAtkx) - Web Programming UNPAS
 * [OOP Dasar pada PHP](https://www.youtube.com/playlist?list=PLFIM0718LjIWvxxll-6wLXrC_16h_Bl_p) - Web Programming UNPAS
 * [PHP The Right Way](https://www.youtube.com/playlist?list=PLFIM0718LjIVcKOrB2tFKi4eWYXHvS3CU) - Web Programming UNPAS
+* [PHP Tutorial Bahasa Indonesia](https://www.youtube.com/playlist?list=PL-CtdCApEFH9EmZy4zYfW1ATIJ-qMXxGt) - Eko Kurniawan Khannedy, Programmer Zaman Now (YouTube)
 * [Tutorial CodeIgniter 4](https://www.youtube.com/playlist?list=PLFIM0718LjIUkkIq1Ub6B5dYNb6IlMvtc) - Web Programming UNPAS
 * [Tutorial CodeIgniter untuk pemula](https://www.youtube.com/playlist?list=PLCZlgfAG0GXCYh65VSFR2yzC7CuPBcAjt) - Sekolah Koding