diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index b74a4b2..7aa2472 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,12 +13,12 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "tools/security/pentest-recon-enum/Packet Capture & Analysis.md",
+                "file": "documentation/INDEX.md",
                 "mode": "source",
                 "source": false
               },
               "icon": "lucide-file",
-              "title": "Packet Capture & Analysis"
+              "title": "INDEX"
             }
           }
         ]
@@ -94,7 +94,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "tools/security/pentest-recon-enum/Packet Capture & Analysis.md",
+                "file": "documentation/INDEX.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -104,7 +104,7 @@
                 "unlinkedCollapsed": true
               },
               "icon": "links-coming-in",
-              "title": "Backlinks for Packet Capture & Analysis"
+              "title": "Backlinks for INDEX"
             }
           },
           {
@@ -113,12 +113,12 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "tools/security/pentest-recon-enum/Packet Capture & Analysis.md",
+                "file": "documentation/INDEX.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               },
               "icon": "links-going-out",
-              "title": "Outgoing links from Packet Capture & Analysis"
+              "title": "Outgoing links from INDEX"
             }
           },
           {
@@ -156,13 +156,13 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "tools/security/pentest-recon-enum/Packet Capture & Analysis.md",
+                "file": "documentation/INDEX.md",
                 "followCursor": false,
                 "showSearch": false,
                 "searchQuery": ""
               },
               "icon": "lucide-list",
-              "title": "Outline of Packet Capture & Analysis"
+              "title": "Outline of INDEX"
             }
           },
           {
@@ -196,6 +196,9 @@
   },
   "active": "9b2e89c682f5d2ef",
   "lastOpenFiles": [
+    "tools/INDEX.md",
+    "documentation/INDEX.md",
+    "tools/security/pentest-recon-enum/Packet Capture & Analysis.md",
     "tools/security/pentest-recon-enum/Recon & Threat Reputation.md",
     "tools/security/pentest-recon-enum/Port Scanners & Network Discovery.md",
     "tools/security/Untitled.md",
@@ -214,7 +217,6 @@
     "tools/sysadmin-devops/https-web-services",
     "tools/sysadmin-devops/Remote Access + SSH Clients.md",
     "tools/network-engineering/dns-dhc-ipam/dns-tools.md",
-    "tools/00_index.md",
     "tools/tools - (migrate out)/gui-tools.md",
     "tools/tools - (migrate out)/web-tools.md",
     "documentation/readme - to refactor.md",
@@ -222,9 +224,7 @@
     "documentation/other-cheat-sheets.md",
     "documentation/manuals-howtos-guides/shell-one-liners.md",
     "documentation/manuals-howtos-guides",
-    "documentation/learning-resources/daily-knowledge-news.md",
     "documentation",
-    "docs/sysadmin-devops/terminal-shell-productivity/shell-functions.md",
     "tools/security/hardening-compliance",
     "tools/network-engineering/diagnostics-troubleshooting/protocols-general",
     "docs/sysadmin-devops/ssh-remote-access",
diff --git a/documentation/INDEX.md b/documentation/INDEX.md
new file mode 100644
index 0000000..9ab4349
--- /dev/null
+++ b/documentation/INDEX.md
@@ -0,0 +1,15 @@
+# Documentation & Resources
+
+Guides, how-tos, one-liners, cheat sheets, learning resources.
+
+## Available Sections
+
+| Section                        | Description                                      | Link                                                      |
+|--------------------------------|--------------------------------------------------|-----------------------------------------------------------|
+| Learning Resources             | Daily knowledge, news, articles                  | [learning-resources/INDEX.md](./learning-resources/INDEX.md) |
+| Manuals / HowTos / Guides      | Shell tricks, one-liners, functions              | [manuals-howtos-guides/INDEX.md](./manuals-howtos-guides/INDEX.md) |
+| Other Cheat Sheets             | General / miscellaneous reference sheets         | [other-cheat-sheets.md](./other-cheat-sheets.md)          |
+
+→ Migrate content from `readme - to refactor.md` into relevant sections or delete after migration.
+
+Last updated: March 2026
\ No newline at end of file
diff --git a/tools/00_index.md b/tools/00_index.md
deleted file mode 100644
index 8b13789..0000000
--- a/tools/00_index.md
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/tools/INDEX.md b/tools/INDEX.md
new file mode 100644
index 0000000..1b12909
--- /dev/null
+++ b/tools/INDEX.md
@@ -0,0 +1,18 @@
+# Tools Overview
+
+Curated collection of security, networking, sysadmin, devops and related tools.  
+All tool tables follow the format defined in [TOOL-TABLE-SCHEMA.md](../TOOL-TABLE-SCHEMA.md).
+
+## Main Categories
+
+| Category                  | Focus Area                                      | # Files | Link                                                                 |
+|---------------------------|-------------------------------------------------|---------|----------------------------------------------------------------------|
+| Network Engineering       | Diagnostics, DNS/IPAM, routing protocols        | 4       | [network-engineering/INDEX.md](./network-engineering/INDEX.md)       |
+| Security                  | Pentest recon/enum, SSL/TLS, vuln analysis      | 5       | [security/INDEX.md](./security/INDEX.md)                             |
+| SysAdmin / DevOps         | Remote access, web services, monitoring, shell  | 7       | [sysadmin-devops/INDEX.md](./sysadmin-devops/INDEX.md)               |
+| System Services           | —                                               | 1       | [system-services.md](./system-services.md)                           |
+## Additional
+
+- [My Contributions](./my-contributions.md) — tools/scripts/resources I've personally added or heavily use
+
+Last updated: March 2026
\ No newline at end of file