diff --git a/README.md b/README.md
index 02ef41e..f198fac 100755
--- a/README.md
+++ b/README.md
@@ -46,4 +46,60 @@ https://istio.io/latest/docs/ops/configuration/traffic-management/protocol-selec
 
 - https://istio.io/latest/blog/
 
-- https://istio.io/latest/about/ecosystem/
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+- https://istio.io/latest/about/ecosystem/
+
+# Tree of folders
+
+```text
+├── 00-Troubleshooting
+├── 01-Getting_Started
+│   ├── 01-hello_world_1_service_1_deployment
+│   ├── 02-hello_world_1_service_2_deployments_unmanaged
+│   ├── 03-hello_world_1_service_2_deployments_managed_version
+│   └── 04-hello_world_1_service_2_deployments_managed_version_foo_namespace
+├── 02-Traffic_management
+│   ├── 01-header_routing
+│   │   └── src
+│   ├── 02-DirectResponse-HTTP-Body
+│   ├── 03-HTTPRewrite
+│   └── 04-HTTPRedirect
+│       └── src
+├── 03-Gateway_Ingress
+│   ├── 01-Host_Based_Routing
+│   ├── 02-Restrict_Namespaces
+│   ├── 03-HTTPS-Gateway-Simple-TLS
+│   ├── 04a-HTTPS-min-TLS-version
+│   ├── 04b-HTTPS-max-TLS-version
+│   ├── 05-TCP-FORWARDING
+│   ├── 06-TLS-PASSTHROUGH
+│   └── 07-HTTP-to-HTTPS-traffic-redirect
+├── 04-Backends
+│   ├── 01-Service_Entry
+│   └── 02-HTTPS-backend
+├── 05-Sidecar
+│   ├── 01-ingress-proxy-forwarding
+│   └── 02-egress-proxy
+├── 08-AuthorizationPolicy
+│   ├── 01-target-namespaces
+│   ├── 02-target-service-accounts
+│   └── 03-target-deployments
+├── 09-Ingress
+│   └── 01-Create-Istio-LoadBalancer
+│       └── IstioOperator
+├── 10-mTLS_PeerAuthentication
+│   ├── 01-disable-mTLS
+│   ├── 02-portLevelMtls
+│   └── 06-mTLS
+│       └── src
+├── 11-Fault_Injection
+│   ├── 05a-FaultInjection-delay
+│   └── 05b-FaultInjection-abort
+├── 12-CircuitBreaking
+├── 90-MixConfigs
+│   ├── 01-HTTPS-Gateway_Service_Entry
+│   │   └── src
+│   └── Minecraft
+│       └── Istio-Ingress
+└── 99-resources
+    └── HTTPS-NGINX-DOCKERFILE
+```
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