diff --git a/es/SUMMARY.md b/es/SUMMARY.md
index aa0a46f5..e8c5b917 100644
--- a/es/SUMMARY.md
+++ b/es/SUMMARY.md
@@ -6,18 +6,21 @@
 
 ## Capítulos
 
-* [Simplificando Kubernetes día 1](day_one/README.md)
-* [Simplificando Kubernetes día 2](day_two/README.md)
-* [Simplificando Kubernetes día 3](day_three/README.md)
-* [Simplificando Kubernetes día 4](day_four/README.md)
-* [Simplificando Kubernetes día 5](day_five/README.md)
-* [Simplificando Kubernetes día 6](day_six/README.md)
-
-## Extras
-
-* [Cloud providers](extras/cloud-providers/cloud-providers.md)
-* [Consejos para el examen](extras/exame_tips.md)
-* [Pod security policy](extras/pod_security_policy.md)
+* [Simplificando Kubernetes dia 1](day-1/README.md)
+* [Simplificando Kubernetes dia 2](day-2/README.md)
+* [Simplificando Kubernetes dia 3](day-3/README.md)
+* [Simplificando Kubernetes dia 4](day-4/README.md)
+* [Simplificando Kubernetes dia 5](day-5/README.md)
+* [Simplificando Kubernetes dia 6](day-6/README.md)
+* [Simplificando Kubernetes dia 7](day-7/README.md)
+* [Simplificando Kubernetes dia 8](day-8/README.md)
+* [Simplificando Kubernetes dia 9](day-9/README.md)
+* [Simplificando Kubernetes dia 10](day-10/README.md)
+* [Simplificando Kubernetes dia 11](day-11/README.md)
+* [Simplificando Kubernetes dia 12](day-12/README.md)
+* [Simplificando Kubernetes dia 13](day-13/README.md)
+* [Simplificando Kubernetes dia 14](day-14/README.md)
+* [Simplificando Kubernetes dia 15](day-15/README.md)
 
 ## Contribuir
 
diff --git a/es/day_one/README.md b/es/day-1/README.md
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rename to es/day-1/README.md
diff --git a/es/day_one/files/desafio/mi-primer-pod.yaml b/es/day-1/files/desafio/mi-primer-pod.yaml
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rename from es/day_one/files/desafio/mi-primer-pod.yaml
rename to es/day-1/files/desafio/mi-primer-pod.yaml
diff --git a/es/day_two/README.md b/es/day-2/README.md
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diff --git a/es/day_three/README.md b/es/day-3/README.md
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diff --git a/es/day_four/README.md b/es/day-4/README.md
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diff --git a/es/day_four/files/nginx-deployment.yaml b/es/day-4/files/nginx-deployment.yaml
similarity index 100%
rename from es/day_four/files/nginx-deployment.yaml
rename to es/day-4/files/nginx-deployment.yaml
diff --git a/es/day_four/files/nginx-liveness.yaml b/es/day-4/files/nginx-liveness.yaml
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rename from es/day_four/files/nginx-liveness.yaml
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diff --git a/es/day_four/files/nginx-readiness.yaml b/es/day-4/files/nginx-readiness.yaml
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rename to es/day-4/files/nginx-readiness.yaml
diff --git a/es/day_four/files/nginx-replicaset.yaml b/es/day-4/files/nginx-replicaset.yaml
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rename to es/day-4/files/nginx-replicaset.yaml
diff --git a/es/day_four/files/nginx-startup.yaml b/es/day-4/files/nginx-startup.yaml
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rename to es/day-4/files/nginx-startup.yaml
diff --git a/es/day_four/files/nginx-todas-probes.yaml b/es/day-4/files/nginx-todas-probes.yaml
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rename to es/day-4/files/nginx-todas-probes.yaml
diff --git a/es/day_four/files/node-exporter-daemonset.yaml b/es/day-4/files/node-exporter-daemonset.yaml
similarity index 100%
rename from es/day_four/files/node-exporter-daemonset.yaml
rename to es/day-4/files/node-exporter-daemonset.yaml
diff --git a/es/day_four/nginx-daemonset.yaml b/es/day-4/nginx-daemonset.yaml
similarity index 100%
rename from es/day_four/nginx-daemonset.yaml
rename to es/day-4/nginx-daemonset.yaml
diff --git a/es/day_four/nginx-deployment.yaml b/es/day-4/nginx-deployment.yaml
similarity index 100%
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rename to es/day-4/nginx-deployment.yaml
diff --git a/es/day_four/nginx-replicaset.yaml b/es/day-4/nginx-replicaset.yaml
similarity index 100%
rename from es/day_four/nginx-replicaset.yaml
rename to es/day-4/nginx-replicaset.yaml
diff --git a/es/day_five/README.md b/es/day-5/README.md
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diff --git a/es/day_six/README.md b/es/day-6/README.md
similarity index 100%
rename from es/day_six/README.md
rename to es/day-6/README.md
diff --git a/es/day_six/files/giropops-senhas-deployment.yaml b/es/day-6/files/giropops-senhas-deployment.yaml
similarity index 100%
rename from es/day_six/files/giropops-senhas-deployment.yaml
rename to es/day-6/files/giropops-senhas-deployment.yaml
diff --git a/es/day_six/files/giropops-senhas-service.yaml b/es/day-6/files/giropops-senhas-service.yaml
similarity index 100%
rename from es/day_six/files/giropops-senhas-service.yaml
rename to es/day-6/files/giropops-senhas-service.yaml
diff --git a/es/day_six/files/pod-emptydir.yaml b/es/day-6/files/pod-emptydir.yaml
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rename from es/day_six/files/pod-emptydir.yaml
rename to es/day-6/files/pod-emptydir.yaml
diff --git a/es/day_six/files/pod.yaml b/es/day-6/files/pod.yaml
similarity index 100%
rename from es/day_six/files/pod.yaml
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diff --git a/es/day_six/files/pv-nfs.yaml b/es/day-6/files/pv-nfs.yaml
similarity index 100%
rename from es/day_six/files/pv-nfs.yaml
rename to es/day-6/files/pv-nfs.yaml
diff --git a/es/day_six/files/pv.yaml b/es/day-6/files/pv.yaml
similarity index 100%
rename from es/day_six/files/pv.yaml
rename to es/day-6/files/pv.yaml
diff --git a/es/day_six/files/pvc.yaml b/es/day-6/files/pvc.yaml
similarity index 100%
rename from es/day_six/files/pvc.yaml
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diff --git a/es/day_six/files/storageclass-nfs.yaml b/es/day-6/files/storageclass-nfs.yaml
similarity index 100%
rename from es/day_six/files/storageclass-nfs.yaml
rename to es/day-6/files/storageclass-nfs.yaml
diff --git a/es/day_six/files/storageclass.yaml b/es/day-6/files/storageclass.yaml
similarity index 100%
rename from es/day_six/files/storageclass.yaml
rename to es/day-6/files/storageclass.yaml
diff --git a/es/day_seven/README.md b/es/day-7/README.md
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diff --git a/es/day_seven/files/headless-service.yaml b/es/day-7/files/headless-service.yaml
similarity index 100%
rename from es/day_seven/files/headless-service.yaml
rename to es/day-7/files/headless-service.yaml
diff --git a/es/day_seven/files/nginx-clusterip-svc.yaml b/es/day-7/files/nginx-clusterip-svc.yaml
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rename from es/day_seven/files/nginx-clusterip-svc.yaml
rename to es/day-7/files/nginx-clusterip-svc.yaml
diff --git a/es/day_seven/files/nginx-deployment.yaml b/es/day-7/files/nginx-deployment.yaml
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rename from es/day_seven/files/nginx-deployment.yaml
rename to es/day-7/files/nginx-deployment.yaml
diff --git a/es/day_seven/files/nginx-loadbalancer-svc.yaml b/es/day-7/files/nginx-loadbalancer-svc.yaml
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rename to es/day-7/files/nginx-loadbalancer-svc.yaml
diff --git a/es/day_seven/files/nginx-nodeport-svc.yaml b/es/day-7/files/nginx-nodeport-svc.yaml
similarity index 100%
rename from es/day_seven/files/nginx-nodeport-svc.yaml
rename to es/day-7/files/nginx-nodeport-svc.yaml
diff --git a/es/day_seven/files/nginx-statefulset.yaml b/es/day-7/files/nginx-statefulset.yaml
similarity index 100%
rename from es/day_seven/files/nginx-statefulset.yaml
rename to es/day-7/files/nginx-statefulset.yaml
diff --git a/es/day_eight/README.md b/es/day-8/README.md
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diff --git a/es/day_nine/README.md b/es/day-9/README.md
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diff --git a/es/extras/cloud-providers/azure/aks-helloworld-one.yaml b/es/extras/cloud-providers/azure/aks-helloworld-one.yaml
deleted file mode 100644
index e97953ce..00000000
--- a/es/extras/cloud-providers/azure/aks-helloworld-one.yaml
+++ /dev/null
@@ -1,33 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: aks-helloworld-one
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: aks-helloworld-one
-  template:
-    metadata:
-      labels:
-        app: aks-helloworld-one
-    spec:
-      containers:
-      - name: aks-helloworld-one
-        image: mcr.microsoft.com/azuredocs/aks-helloworld:v1
-        ports:
-        - containerPort: 80
-        env:
-        - name: TITLE
-          value: "Welcome to Azure Kubernetes Service (AKS)"
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: aks-helloworld-one
-spec:
-  type: ClusterIP
-  ports:
-  - port: 80
-  selector:
-    app: aks-helloworld-one
diff --git a/es/extras/cloud-providers/azure/aks-helloworld-two.yaml b/es/extras/cloud-providers/azure/aks-helloworld-two.yaml
deleted file mode 100644
index 74cc4bed..00000000
--- a/es/extras/cloud-providers/azure/aks-helloworld-two.yaml
+++ /dev/null
@@ -1,33 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: aks-helloworld-two
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app: aks-helloworld-two
-  template:
-    metadata:
-      labels:
-        app: aks-helloworld-two
-    spec:
-      containers:
-      - name: aks-helloworld-two
-        image: mcr.microsoft.com/azuredocs/aks-helloworld:v1
-        ports:
-        - containerPort: 80
-        env:
-        - name: TITLE
-          value: "AKS Ingress Demo"
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: aks-helloworld-two
-spec:
-  type: ClusterIP
-  ports:
-  - port: 80
-  selector:
-    app: aks-helloworld-two
diff --git a/es/extras/cloud-providers/azure/hello-world-ingress.yaml b/es/extras/cloud-providers/azure/hello-world-ingress.yaml
deleted file mode 100644
index ead5ad0d..00000000
--- a/es/extras/cloud-providers/azure/hello-world-ingress.yaml
+++ /dev/null
@@ -1,53 +0,0 @@
-apiVersion: networking.k8s.io/v1beta1
-kind: Ingress
-metadata:
-  name: hello-world-ingress
-  annotations:
-    kubernetes.io/ingress.class: nginx
-    nginx.ingress.kubernetes.io/rewrite-target: /$1
-    nginx.ingress.kubernetes.io/use-regex: "true"
-    cert-manager.io/cluster-issuer: letsencrypt
-spec:
-  tls:
-  - hosts:
-    - giropops-live.eastus.cloudapp.azure.com
-    secretName: tls-secret
-  rules:
-  - host: giropops-live.eastus.cloudapp.azure.com
-    http:
-      paths:
-      - backend:
-          serviceName: aks-helloworld-one
-          servicePort: 80
-        path: /hello-world-one(/|$)(.*)
-      - backend:
-          serviceName: aks-helloworld-two
-          servicePort: 80
-        path: /hello-world-two(/|$)(.*)
-      - backend:
-          serviceName: aks-helloworld-one
-          servicePort: 80
-        path: /(.*)
----
-apiVersion: networking.k8s.io/v1beta1
-kind: Ingress
-metadata:
-  name: hello-world-ingress-static
-  annotations:
-    kubernetes.io/ingress.class: nginx
-    nginx.ingress.kubernetes.io/rewrite-target: /static/$2
-    nginx.ingress.kubernetes.io/use-regex: "true"
-    cert-manager.io/cluster-issuer: letsencrypt
-spec:
-  tls:
-  - hosts:
-    - giropops-live.eastus.cloudapp.azure.com
-    secretName: tls-secret
-  rules:
-  - host: giropops-live.eastus.cloudapp.azure.com
-    http:
-      paths:
-      - backend:
-          serviceName: aks-helloworld-one
-          servicePort: 80
-        path: /static(/|$)(.*)
diff --git a/es/extras/cloud-providers/cloud-providers.md b/es/extras/cloud-providers/cloud-providers.md
deleted file mode 100644
index e69de29b..00000000
diff --git a/es/extras/exame_tips.md b/es/extras/exame_tips.md
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index e69de29b..00000000
diff --git a/es/extras/pod_security_policy.md b/es/extras/pod_security_policy.md
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