diff --git a/9fans.net/go b/9fans.net/go
new file mode 160000
index 0000000..65b8cf0
--- /dev/null
+++ b/9fans.net/go
@@ -0,0 +1 @@
+Subproject commit 65b8cf069318223b1e722b4b36e729e5e9bb9eab
diff --git a/github.com/golang/lint b/github.com/golang/lint
new file mode 160000
index 0000000..32a8716
--- /dev/null
+++ b/github.com/golang/lint
@@ -0,0 +1 @@
+Subproject commit 32a87160691b3c96046c0c678fe57c5bef761456
diff --git a/github.com/mikkelmilo/test.txt b/github.com/mikkelmilo/test.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/github.com/nsf/gocode b/github.com/nsf/gocode
new file mode 160000
index 0000000..659c0a4
--- /dev/null
+++ b/github.com/nsf/gocode
@@ -0,0 +1 @@
+Subproject commit 659c0a429af764118d27692d02b77c544a32cfe3
diff --git a/github.com/rogpeppe/godef b/github.com/rogpeppe/godef
new file mode 160000
index 0000000..f90a996
--- /dev/null
+++ b/github.com/rogpeppe/godef
@@ -0,0 +1 @@
+Subproject commit f90a99664522cad305e072e594a262ae1fcdd256
diff --git a/golang.org/x/tools b/golang.org/x/tools
new file mode 160000
index 0000000..a17fa84
--- /dev/null
+++ b/golang.org/x/tools
@@ -0,0 +1 @@
+Subproject commit a17fa845d74d17bf6d466f84fd9d3c5602669e53
diff --git a/graphTester.go b/graphTester.go
new file mode 100644
index 0000000..f3e2494
--- /dev/null
+++ b/graphTester.go
@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"lib/graph"
+)
+
+func main() {
+	n := graph.Node{Value: "1"}
+	n2 := graph.Node{Value: "2"}
+	n3 := graph.Node{Value: "3"}
+
+	n.Connect(&n2)
+	n.Connect(&n3)
+	n3.Connect(n.GetConnections()[0])
+	n.Disconnect(&n2)
+	fmt.Println("n <-> n2: ", n2.IsConnectedTo(&n), n.IsConnectedTo(&n2))
+	fmt.Println("n <-> n3: ", n3.IsConnectedTo(&n), n.IsConnectedTo(&n3))
+	fmt.Println("n2 <-> n3: ", n2.IsConnectedTo(&n3), n3.IsConnectedTo(&n2))
+
+	n.InsertMessage("message string")
+	n.InsertMessage("2")
+	fmt.Println(n.GetMessages())
+}
diff --git a/hello.go b/hello.go
index 5395750..a4c94ae 100644
--- a/hello.go
+++ b/hello.go
@@ -1,7 +1,7 @@
 package main
 
 import(
-    "lib"
+    "lib/collection"
     "fmt"
 )
 
diff --git a/lib/stack.go b/lib/collection/stack.go
similarity index 100%
rename from lib/stack.go
rename to lib/collection/stack.go
diff --git a/lib/graph/hello.go b/lib/graph/hello.go
new file mode 100644
index 0000000..6bce4b1
--- /dev/null
+++ b/lib/graph/hello.go
@@ -0,0 +1,68 @@
+package graph
+
+//Node a graph node which can contain connections to other nodes
+type Node struct {
+	Value       string
+	connections []*Node
+	messages    []string
+}
+
+//GetConnections returns all connections
+func (n *Node) GetConnections() []*Node {
+	return n.connections
+}
+
+//GetMessages returns all messages in this Node
+func (n *Node) GetMessages() []string {
+	return n.messages
+}
+
+//Connect connects two nodes
+func (n *Node) Connect(otherNode *Node) {
+	//nref := &otherNode
+	n.connections = append(n.connections, otherNode)
+	otherNode.connections = append(otherNode.connections, n)
+}
+
+//Disconnect disconnects to nodes
+func (n *Node) Disconnect(otherNode *Node) int {
+	i := n.GetIndexOf(otherNode)
+	j := otherNode.GetIndexOf(n)
+	if i != -1 && j != -1 {
+		//remove othernode from n.connections, and remove n from otherNode.connections
+		n.connections = append(n.connections[:i], n.connections[i+1:]...)
+		otherNode.connections = append(otherNode.connections[:j], otherNode.connections[j+1:]...)
+		return 1
+	}
+	return -1
+}
+
+//IsConnectedTo checks if this node is connected to the given node
+func (n *Node) IsConnectedTo(otherNode *Node) bool {
+	if n.GetIndexOf(otherNode) != -1 {
+		return true
+	}
+	return false
+}
+
+//GetIndexOf gets the index of the specified node
+func (n *Node) GetIndexOf(otherNode *Node) int {
+	for i := range n.connections {
+		//fmt.Printf("%p and %p \n", n.connections[i], otherNode)
+
+		if n.connections[i] == otherNode { //addresses are compared
+			return i
+		}
+	}
+	return -1
+}
+
+//NrOfConnectedNodes number of nodes connected to this node
+func (n *Node) NrOfConnectedNodes() int {
+	return len(n.connections)
+}
+
+//InsertMessage inserts a string message in the messages field of this node
+func (n *Node) InsertMessage(message string) {
+	n.messages = append(n.messages, message) //append returns a new slice, so we have to replace it
+}