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diff --git a/package.json b/package.json
new file mode 100644
index 0000000..e603e79
--- /dev/null
+++ b/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "webrtc-video-conference-tutorial",
+  "version": "1.0.0",
+  "description": "This tutorial is divided in three versions:",
+  "main": "server.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node server.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/agilityfeat/webrtc-video-conference-tutorial.git"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/agilityfeat/webrtc-video-conference-tutorial/issues"
+  },
+  "homepage": "https://github.com/agilityfeat/webrtc-video-conference-tutorial#readme",
+  "dependencies": {
+    "express": "^4.16.4",
+    "socket.io": "^2.2.0"
+  }
+}
diff --git a/public/.DS_Store b/public/.DS_Store
new file mode 100644
index 0000000..c4e5a56
Binary files /dev/null and b/public/.DS_Store differ
diff --git a/public/client.js b/public/client.js
new file mode 100644
index 0000000..d763ed3
--- /dev/null
+++ b/public/client.js
@@ -0,0 +1,132 @@
+// getting dom elements
+var divSelectRoom = document.getElementById("selectRoom");
+var divConsultingRoom = document.getElementById("consultingRoom");
+var inputRoomNumber = document.getElementById("roomNumber");
+var btnGoRoom = document.getElementById("goRoom");
+var localVideo = document.getElementById("localVideo");
+var remoteVideo = document.getElementById("remoteVideo");
+
+// variables
+var roomNumber;
+var localStream;
+var remoteStream;
+var rtcPeerConnection;
+var iceServers = {
+    'iceServers': [
+        { 'urls': 'stun:stun.services.mozilla.com' },
+        { 'urls': 'stun:stun.l.google.com:19302' }
+    ]
+}
+var streamConstraints = { audio: true, video: true };
+var isCaller;
+
+// Let's do this
+var socket = io();
+
+btnGoRoom.onclick = function () {
+    if (inputRoomNumber.value === '') {
+        alert("Please type a room number")
+    } else {
+        roomNumber = inputRoomNumber.value;
+        socket.emit('create or join', roomNumber);
+        divSelectRoom.style = "display: none;";
+        divConsultingRoom.style = "display: block;";
+    }
+};
+
+// message handlers
+socket.on('created', function (room) {
+    navigator.mediaDevices.getUserMedia(streamConstraints).then(function (stream) {
+        localStream = stream;
+        localVideo.srcObject = stream;
+        isCaller = true;
+    }).catch(function (err) {
+        console.log('An error ocurred when accessing media devices', err);
+    });
+});
+
+socket.on('joined', function (room) {
+    navigator.mediaDevices.getUserMedia(streamConstraints).then(function (stream) {
+        localStream = stream;
+        localVideo.srcObject = stream;
+        socket.emit('ready', roomNumber);
+    }).catch(function (err) {
+        console.log('An error ocurred when accessing media devices', err);
+    });
+});
+
+socket.on('candidate', function (event) {
+    var candidate = new RTCIceCandidate({
+        sdpMLineIndex: event.label,
+        candidate: event.candidate
+    });
+    rtcPeerConnection.addIceCandidate(candidate);
+});
+
+socket.on('ready', function () {
+    if (isCaller) {
+        rtcPeerConnection = new RTCPeerConnection(iceServers);
+        rtcPeerConnection.onicecandidate = onIceCandidate;
+        rtcPeerConnection.ontrack = onAddStream;
+        rtcPeerConnection.addTrack(localStream.getTracks()[0], localStream);
+        rtcPeerConnection.addTrack(localStream.getTracks()[1], localStream);
+        rtcPeerConnection.createOffer()
+            .then(sessionDescription => {
+                rtcPeerConnection.setLocalDescription(sessionDescription);
+                socket.emit('offer', {
+                    type: 'offer',
+                    sdp: sessionDescription,
+                    room: roomNumber
+                });
+            })
+            .catch(error => {
+                console.log(error)
+            })
+    }
+});
+
+socket.on('offer', function (event) {
+    if (!isCaller) {
+        rtcPeerConnection = new RTCPeerConnection(iceServers);
+        rtcPeerConnection.onicecandidate = onIceCandidate;
+        rtcPeerConnection.ontrack = onAddStream;
+        rtcPeerConnection.addTrack(localStream.getTracks()[0], localStream);
+        rtcPeerConnection.addTrack(localStream.getTracks()[1], localStream);
+        rtcPeerConnection.setRemoteDescription(new RTCSessionDescription(event));
+        rtcPeerConnection.createAnswer()
+            .then(sessionDescription => {
+                rtcPeerConnection.setLocalDescription(sessionDescription);
+                socket.emit('answer', {
+                    type: 'answer',
+                    sdp: sessionDescription,
+                    room: roomNumber
+                });
+            })
+            .catch(error => {
+                console.log(error)
+            })
+    }
+});
+
+socket.on('answer', function (event) {
+    rtcPeerConnection.setRemoteDescription(new RTCSessionDescription(event));
+})
+
+// handler functions
+function onIceCandidate(event) {
+    if (event.candidate) {
+        console.log('sending ice candidate');
+        socket.emit('candidate', {
+            type: 'candidate',
+            label: event.candidate.sdpMLineIndex,
+            id: event.candidate.sdpMid,
+            candidate: event.candidate.candidate,
+            room: roomNumber
+        })
+    }
+}
+
+function onAddStream(event) {
+    remoteVideo.srcObject = event.streams[0];
+    remoteStream = event.stream;
+}
\ No newline at end of file
diff --git a/public/index.html b/public/index.html
new file mode 100644
index 0000000..f5e5fc0
--- /dev/null
+++ b/public/index.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<head>
+    <title>WebRTC Video Conference Tutorial - Plain WebRTC</title>
+</head>
+<body>
+    <h1>WebRTC Video Conference Tutorial - Plain WebRTC</h1>
+
+    <div id="selectRoom">
+        <label>Type the room number</label>
+        <input id="roomNumber" type="text" />
+        <button id="goRoom">Go</button>
+    </div>
+
+    <div id="consultingRoom" style="display:none">
+        <video id="localVideo" autoplay></video>
+        <video id="remoteVideo" autoplay></video>
+    </div>
+
+    <script src="/socket.io/socket.io.js"></script>
+    <script src="client.js"></script>
+</body>
\ No newline at end of file
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..84041ee
--- /dev/null
+++ b/server.js
@@ -0,0 +1,57 @@
+//requires
+const express = require('express');
+const app = express();
+var http = require('http').Server(app);
+var io = require('socket.io')(http);
+
+const port = process.env.PORT || 3000;
+
+// express routing
+app.use(express.static('public'));
+
+
+// signaling
+io.on('connection', function (socket) {
+    console.log('a user connected');
+
+    socket.on('create or join', function (room) {
+        console.log('create or join to room ', room);
+        
+        var myRoom = io.sockets.adapter.rooms[room] || { length: 0 };
+        var numClients = myRoom.length;
+
+        console.log(room, ' has ', numClients, ' clients');
+
+        if (numClients == 0) {
+            socket.join(room);
+            socket.emit('created', room);
+        } else if (numClients == 1) {
+            socket.join(room);
+            socket.emit('joined', room);
+        } else {
+            socket.emit('full', room);
+        }
+    });
+
+    socket.on('ready', function (room){
+        socket.broadcast.to(room).emit('ready');
+    });
+
+    socket.on('candidate', function (event){
+        socket.broadcast.to(event.room).emit('candidate', event);
+    });
+
+    socket.on('offer', function(event){
+        socket.broadcast.to(event.room).emit('offer',event.sdp);
+    });
+
+    socket.on('answer', function(event){
+        socket.broadcast.to(event.room).emit('answer',event.sdp);
+    });
+
+});
+
+// listener
+http.listen(port || 3000, function () {
+    console.log('listening on', port);
+});
\ No newline at end of file