diff --git a/CloudComputing_Lab/modules/ROOT/nav.adoc b/CloudComputing_Lab/modules/ROOT/nav.adoc
index 7f0231e..1747057 100644
--- a/CloudComputing_Lab/modules/ROOT/nav.adoc
+++ b/CloudComputing_Lab/modules/ROOT/nav.adoc
@@ -1,2 +1,4 @@
 * xref:index.adoc[Intro]
 * xref:a.adoc[Lab environment]
+* xref:b.adoc[Create service]
+* xref:c.adoc[Hybrid2Cloud connect]
diff --git a/CloudComputing_Lab/modules/ROOT/pages/a.adoc b/CloudComputing_Lab/modules/ROOT/pages/a.adoc
index 5f4f0b2..cb4b929 100644
--- a/CloudComputing_Lab/modules/ROOT/pages/a.adoc
+++ b/CloudComputing_Lab/modules/ROOT/pages/a.adoc
@@ -90,22 +90,6 @@ http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/install/inst
 
 http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/hybrid/start-microservices.html[Start/stop Instance]
 
- Datacollector
-
- The "data collector" is a lightweight microservice application that collect and sends metadata, collected from a system, such as an IoT network, distributed system, data center, etc to a storage system.
-
-
-http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/myservices/poc-datacollector.html[Data collector - start^]
-
-http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/build/site/swarmlab_poc-datacollector/docs/index.html[Data collector - Usage^]
-
-****
-TIP: Usage 
-
-video::650056224[vimeo,start=1:w ]
-****
-
-
 == Tasks 
 
  Make sure you have enough practice in the following tasks:
diff --git a/CloudComputing_Lab/modules/ROOT/pages/b.adoc b/CloudComputing_Lab/modules/ROOT/pages/b.adoc
new file mode 100644
index 0000000..e3797a9
--- /dev/null
+++ b/CloudComputing_Lab/modules/ROOT/pages/b.adoc
@@ -0,0 +1,28 @@
+
+= Create Service
+
+
+== Start Datacollector
+
+ The "data collector" is a lightweight microservice application that collect and sends metadata, collected from a system, such as an IoT network, distributed system, data center, etc to a storage system.
+
+
+http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/swarmlab/docs/myservices/poc-datacollector.html[Data collector - start^]
+
+http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/build/site/swarmlab_poc-datacollector/docs/index.html[Data collector - Usage^]
+
+****
+TIP: Usage 
+
+video::650056224[vimeo,start=1 ]
+****
+
+
+== Tasks 
+
+ Make sure you have enough practice in the following tasks:
+
+* Start Datacollector @okeanos
+* Usage  @okeanos
+* Start Datacollector @home
+* Usage  @home
diff --git a/CloudComputing_Lab/modules/ROOT/pages/c.adoc b/CloudComputing_Lab/modules/ROOT/pages/c.adoc
new file mode 100644
index 0000000..8eed761
--- /dev/null
+++ b/CloudComputing_Lab/modules/ROOT/pages/c.adoc
@@ -0,0 +1,26 @@
+
+=  Hybrid2Cloud interconnection
+
+
+== Create VPN
+
+
+****
+TIP: Create VPN
+
+video::565597681[vimeo,start=1 ]
+****
+
+== Find All IP Addresses on a Network
+
+http://docs.swarmlab.io/SwarmLab-HowTos/swarmlab/docs/build/site/swarmlab_sec-intro/docs/index.html[Network Scanning]
+
+
+== Tasks 
+
+ Make sure you have enough practice in the following tasks:
+
+* Create VPN
+* Discover IP addresses and Ports
+* ping a remote node
+* Use a remote service
diff --git a/CloudComputing_Lab/modules/ROOT/pages/index.adoc b/CloudComputing_Lab/modules/ROOT/pages/index.adoc
index 15fa113..f0d68d5 100644
--- a/CloudComputing_Lab/modules/ROOT/pages/index.adoc
+++ b/CloudComputing_Lab/modules/ROOT/pages/index.adoc
@@ -4,9 +4,7 @@
 
 == Register in xref:ROOT:a.adoc[okeanos]
 
-== Sign up in slack
-
-https://app.slack.com/client/T035D2LK5U4/C035D2YJK4L[Sign up^]
+== https://app.slack.com/client/T035D2LK5U4/C035D2YJK4L[Sign up^] in Slack