diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/client/Header.java b/src/main/java/org/gcube/portlets/user/dataminermanager/client/Header.java
index 9d2d4be..cb1c96c 100644
--- a/src/main/java/org/gcube/portlets/user/dataminermanager/client/Header.java
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/client/Header.java
@@ -7,10 +7,15 @@ import org.gcube.portlets.user.dataminermanager.client.common.EventBusProvider;
 import org.gcube.portlets.user.dataminermanager.client.events.MenuEvent;
 import org.gcube.portlets.user.dataminermanager.client.events.MenuSwitchEvent;
 import org.gcube.portlets.user.dataminermanager.client.type.MenuType;
+import org.gcube.portlets.user.dataminermanager.client.util.UtilsGXT3;
 
 import com.allen_sauer.gwt.log.client.Log;
 import com.google.gwt.event.dom.client.ClickEvent;
 import com.google.gwt.event.dom.client.ClickHandler;
+import com.google.gwt.resources.client.ResourceCallback;
+import com.google.gwt.resources.client.ResourceException;
+import com.google.gwt.resources.client.TextResource;
+import com.google.gwt.user.client.Window;
 import com.google.gwt.user.client.ui.HorizontalPanel;
 import com.google.gwt.user.client.ui.Image;
 
@@ -22,7 +27,7 @@ import com.google.gwt.user.client.ui.Image;
  */
 public class Header extends HorizontalPanel {
 
-	private Image menuGoBack, menuExperiment, menuDataSpace, menuComputations;
+	private Image menuGoBack, menuExperiment, menuDataSpace, menuComputations, menuHelp;
 	private Enum<MenuType> currentSelection;
 
 	public Header() {
@@ -98,23 +103,40 @@ public class Header extends HorizontalPanel {
 				EventBusProvider.INSTANCE.fireEvent(menuEvent);
 			}
 		});
+		
+		
+		menuHelp = new Image(
+				DataMinerManager.resources.menuItemHelp());
+		menuHelp.addStyleName("menuItemImage");
+		menuHelp.addClickHandler(new ClickHandler() {
+
+			@Override
+			public void onClick(ClickEvent event) {
+				Log.debug("Click Menu Help");
+				showHelp();
+			}
+		});
+		
 
 		add(logo);
 		add(menuGoBack);
 		add(menuDataSpace);
 		add(menuExperiment);
 		add(menuComputations);
+		add(menuHelp);
 
 		this.setCellWidth(logo, "100px");
 		this.setCellWidth(menuGoBack, "100px");
 		this.setCellWidth(menuDataSpace, "80px");
 		this.setCellWidth(menuExperiment, "80px"); //
 		this.setCellWidth(menuComputations, "80px");
+		this.setCellWidth(menuHelp, "80px");
 
 		menuGoBack.setVisible(false);
 		menuDataSpace.setVisible(false);
 		menuExperiment.setVisible(false);
 		menuComputations.setVisible(false);
+		menuHelp.setVisible(false);
 	}
 
 	public void setMenu(MenuType menuType){
@@ -125,6 +147,7 @@ public class Header extends HorizontalPanel {
 			menuDataSpace.setVisible(false);
 			menuExperiment.setVisible(false);
 			menuComputations.setVisible(false);
+			menuHelp.setVisible(false);
 
 			if (currentSelection != null
 					&& currentSelection.compareTo(MenuType.EXPERIMENT) == 0)
@@ -143,8 +166,10 @@ public class Header extends HorizontalPanel {
 				menuDataSpace.setVisible(true);
 				menuExperiment.setVisible(true);
 				menuComputations.setVisible(true);
+				menuHelp.setVisible(true);
 			}
-
+		
+			
 			if (currentSelection != null
 					&& currentSelection.compareTo(MenuType.EXPERIMENT) == 0)
 				menuExperiment.removeStyleName("menuItemImage-selected");
@@ -176,6 +201,7 @@ public class Header extends HorizontalPanel {
 			menuDataSpace.setVisible(false);
 			menuExperiment.setVisible(false);
 			menuComputations.setVisible(false);
+			menuHelp.setVisible(false);
 
 			if (currentSelection != null
 					&& currentSelection.compareTo(MenuType.EXPERIMENT) == 0)
@@ -194,6 +220,7 @@ public class Header extends HorizontalPanel {
 				menuDataSpace.setVisible(true);
 				menuExperiment.setVisible(true);
 				menuComputations.setVisible(true);
+				menuHelp.setVisible(true);
 			}
 
 			if (currentSelection != null
@@ -216,5 +243,32 @@ public class Header extends HorizontalPanel {
 		currentSelection = event.getMenuType();
 		return;
 	}
+	
+	
+	private void showHelp() {
+		try {
+			DataMinerManager.resources.wikiLink().getText(
+					new ResourceCallback<TextResource>() {
+						public void onError(ResourceException e) {
+							Log.error("Error retrieving wiki link!: "
+									+ e.getLocalizedMessage());
+							UtilsGXT3.alert("Error",
+									"Error retrieving wiki link!");
+						}
+
+						public void onSuccess(TextResource r) {
+							String s = r.getText();
+							Window.open(s,
+									"DataMiner Wiki", "");
+						}
+					});
+		} catch (ResourceException e) {
+			Log.error("Error retrieving wiki link!: " + e.getLocalizedMessage());
+			UtilsGXT3.alert("Error", "Error retrieving wiki link!");
+			e.printStackTrace();
+
+		}
+
+	}
 
 }
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/Resources.java b/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/Resources.java
index 006f3c9..cd0784f 100644
--- a/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/Resources.java
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/Resources.java
@@ -1,7 +1,9 @@
 package org.gcube.portlets.user.dataminermanager.client.resources;
 
 import com.google.gwt.resources.client.ClientBundle;
+import com.google.gwt.resources.client.ExternalTextResource;
 import com.google.gwt.resources.client.ImageResource;
+import com.google.gwt.resources.client.ClientBundle.Source;
 
 /**
  * 
@@ -11,6 +13,9 @@ import com.google.gwt.resources.client.ImageResource;
  */
 public interface Resources extends ClientBundle {
 
+	@Source("WikiLink.txt")
+	ExternalTextResource wikiLink();
+	
 	@Source("logoLittle.png")
 	ImageResource logoLittle();
 
@@ -58,6 +63,9 @@ public interface Resources extends ClientBundle {
 
 	@Source("menuItemDataspace.png")
 	ImageResource menuItemInputspace();
+	
+	@Source("menuItemHelp.png")
+	ImageResource menuItemHelp();
 
 	@Source("ajax-loader-big.gif")
 	ImageResource loaderBig();
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/WikiLink.txt b/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/WikiLink.txt
new file mode 100644
index 0000000..3eceac8
--- /dev/null
+++ b/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/WikiLink.txt
@@ -0,0 +1 @@
+http://wiki.gcube-system.org/gcube/DataMiner_Manager
\ No newline at end of file
diff --git a/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/menuItemHelp.png b/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/menuItemHelp.png
new file mode 100644
index 0000000..4e8178c
Binary files /dev/null and b/src/main/java/org/gcube/portlets/user/dataminermanager/client/resources/menuItemHelp.png differ