diff --git a/README.md b/README.md
index 6043910..aae214a 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,32 @@
+# Tsunami
+
 **Netbox + XO + Terraform + Ansible = The best deployment kit**
 
-How to run:<br>
-cp passwd.auto.tfvars.example passwd.auto.tfvars<br>
-replace all variable to match your infrastructure
+## Configuration
 
-edit cloud_network_config.tftpl to replace eth0 (to be changed)
+[Install terraform](https://www.terraform.io/downloads)
 
-create a prefix with IP you want to use on netbox <br>
-edit variables.auto.tfvars 
+replace your variables:
+```bash
+# copy password template
+cp passwd.auto.tfvars.example passwd.auto.tfvars
+
+# edit with your infra passwords
+nano passwd.auto.tfvars
+
+# set your template vm network interface
+nano cloud_network_config.tftpl
+
+# create a prefix with IP you want to use on netbox, and set your vm variables
+nano variables.auto.tfvars
+```
 
 You can add your playbook in the folder playbooks/ and use them in variables.auto.tfvars
 
-then
+## Run
 
-terraform init<br>
-terraform plan<br>
+```bash
+terraform init
+terraform plan
 terraform apply
+```
diff --git a/main.tf b/main.tf
index 328a26a..bdf4094 100644
--- a/main.tf
+++ b/main.tf
@@ -31,7 +31,7 @@ data "xenorchestra_template" "template" {
 }
 
 
-resource "xenorchestra_vm" "bar" {
+resource "xenorchestra_vm" "vm_deployed" {
   memory_max = var.ram * 1024 * 1024 * 1024
   cpus       = var.cpu
   cloud_config = templatefile("cloud_config.tftpl", {
@@ -58,10 +58,7 @@ resource "xenorchestra_vm" "bar" {
     size       = var.disk_size * 1024 * 1024 * 1024
   }
 
-  tags = [
-    "Debian",
-    "Best Distro",
-  ]
+  tags = var.vm_tags
 
   // Override the default create timeout from 5 mins to 20.
   timeouts {
@@ -72,6 +69,8 @@ resource "xenorchestra_vm" "bar" {
 
 # Generate inventory file
 resource "local_file" "inventory" {
+  count = var.playbook != "" ? 1 : 0
+
   filename = "inventory"
   content  = <<EOF
 [all]
@@ -80,12 +79,16 @@ EOF
 }
 
 resource "time_sleep" "wait_30_seconds" {
-  depends_on = [xenorchestra_vm.bar]
+  count = var.playbook != "" ? 1 : 0
+
+  depends_on = [xenorchestra_vm.vm_deployed]
 
   create_duration = "30s"
 }
 
 resource "null_resource" "run-ansible" {
+  count = var.playbook != "" ? 1 : 0
+
   provisioner "local-exec" {
     command = "ansible-playbook -D -i inventory playbooks/${var.playbook} "
     environment = {
diff --git a/var.tf b/var.tf
index 4d4144d..721275e 100644
--- a/var.tf
+++ b/var.tf
@@ -68,6 +68,7 @@ variable "template" {
 
 variable "playbook" {
   type = string
+  default = ""
 }
 
 variable "cpu" {
@@ -93,3 +94,8 @@ variable "disk_size" {
 variable "ssh_keys" {
   type = string
 }
+
+variable "vm_tags" {
+  type = list
+  default = []
+}