diff --git a/content/AI&DATA/index.md b/content/AI&DATA/index.md
index 79efe59b5..7e8fda9fd 100644
--- a/content/AI&DATA/index.md
+++ b/content/AI&DATA/index.md
@@ -1,3 +1,22 @@
+---
+tags:
+  - ai
+  - ml
+  - dl
+  - math
+  - dataeng
+  - datascience
+  - python
+  - julia
+---
+
+#ai
+#ml
+#dl
+#math
+#datascience
+#dataeng
+
 # Index
 
 * [Data Enginnering](./Data%20Engineering/)
diff --git a/content/Article&Books/index.md b/content/Article&Books/index.md
index 5930c4a10..5a66ae5c1 100644
--- a/content/Article&Books/index.md
+++ b/content/Article&Books/index.md
@@ -1,4 +1,11 @@
+---
+tags:
+  - books
+  - article
+---
+-
 # Index
-
+#books 
+#article 
 * [Books](./books/)
 * [Articles](./articles/)
\ No newline at end of file
diff --git a/content/Cloud/cloud index.md b/content/Cloud/cloud index.md
index 2d0b270a8..f559f453b 100644
--- a/content/Cloud/cloud index.md	
+++ b/content/Cloud/cloud index.md	
@@ -1,3 +1,14 @@
+---
+tags:
+  - "#gcloud"
+  - aws
+  - azure
+  - cloud
+---
+-
 #index 
-
+#aws
+#azure
+#gcloud
+#cloud
 * [Aws](./AWS/)
diff --git a/content/CyberSecurity/Index.md b/content/CyberSecurity/Index.md
index e69de29bb..be72db53d 100644
--- a/content/CyberSecurity/Index.md
+++ b/content/CyberSecurity/Index.md
@@ -0,0 +1,5 @@
+---
+tags:
+  - "#cyber"
+---
+#cyber
\ No newline at end of file
diff --git a/content/Devops&DevSecOps/Index.md b/content/Devops&DevSecOps/Index.md
index 76798b1e8..c4c8eff80 100644
--- a/content/Devops&DevSecOps/Index.md
+++ b/content/Devops&DevSecOps/Index.md
@@ -1,5 +1,13 @@
+---
+tags:
+  - devops
+  - devsecops
+---
+#devsecops
+#devops
 # Index
 
+
 * [Devops](./devops/)
 * [DevSecOps](./devsecops/)
 
diff --git a/content/ProgramingLang/Index.md b/content/ProgramingLang/Index.md
new file mode 100644
index 000000000..9effe9331
--- /dev/null
+++ b/content/ProgramingLang/Index.md
@@ -0,0 +1,13 @@
+---
+tags:
+  - go
+  - java
+  - python
+  - julia
+  - programinglang
+---
+#go
+#java
+#python
+#julia
+#programinglang
diff --git a/content/SoftwareEngineering/Index.md b/content/SoftwareEngineering/Index.md
index 103426492..a88743df7 100644
--- a/content/SoftwareEngineering/Index.md
+++ b/content/SoftwareEngineering/Index.md
@@ -1,2 +1,8 @@
+---
+tags:
+  - softwarefactory
+  - software-engineering
+---
+-
 # Software Engineering
 
diff --git a/content/SoftwareEngineering/Lockheed Martin Software Factory.md b/content/SoftwareEngineering/Lockheed Martin Software Factory.md
index beea23ced..428773843 100644
--- a/content/SoftwareEngineering/Lockheed Martin Software Factory.md	
+++ b/content/SoftwareEngineering/Lockheed Martin Software Factory.md	
@@ -1,3 +1,10 @@
+---
+tags:
+  - softwarefactory
+  - software-engineering
+---
+#software-engineering
+
 ![[Screenshot from 2023-03-14 15-53-57.png]]
 
 **Software Dojos: Iterative Learning**
diff --git a/content/index.md b/content/index.md
index c15e8a5e1..eb51fe14f 100644
--- a/content/index.md
+++ b/content/index.md
@@ -1,3 +1,17 @@
+---
+tags:
+  - index
+  - todos
+  - software-engineering
+  - programinglang
+  - devops
+  - devsecops
+  - cyber
+  - cloud
+  - books
+  - article
+---
+-
 # Erdem's Second Brain 🧠
 
 Welcome to my public Second Brain! This is a space where I store my notes, ideas, insights, and connections I’ve made throughout my life. Organized as a Zettelkasten (or a Digital Garden), you can explore the various topics that interest me, learn from the content I’ve gathered, and see how everything is connected.