diff --git a/.eslintrc.js b/.eslintrc.js
new file mode 100644
index 0000000..e3fae43
--- /dev/null
+++ b/.eslintrc.js
@@ -0,0 +1,8 @@
+
+module.exports = {
+  'extends': 'standard',
+  'plugins': [
+    'standard',
+    'promise'
+  ]
+}
\ No newline at end of file
diff --git a/app.js b/app.js
index 336cb9e..58627a9 100644
--- a/app.js
+++ b/app.js
@@ -1,46 +1,46 @@
-var express = require('express');
-var path = require('path');
-var favicon = require('serve-favicon');
-var logger = require('morgan');
-var cookieParser = require('cookie-parser');
-var bodyParser = require('body-parser');
+const express = require('express')
+const path = require('path')
+// const favicon = require('serve-favicon')
+const logger = require('morgan')
+const cookieParser = require('cookie-parser')
+const bodyParser = require('body-parser')
 
-var index = require('./routes/index');
-var courses = require('./routes/courses');
+const index = require('./routes/index')
+const courses = require('./routes/courses')
 
-var app = express();
+const app = express()
 
 // view engine setup
-app.set('views', path.join(__dirname, 'views'));
-app.set('view engine', 'pug');
+app.set('views', path.join(__dirname, 'views'))
+app.set('view engine', 'pug')
 
 // uncomment after placing your favicon in /public
-//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
-app.use(logger('dev'));
-app.use(bodyParser.json());
-app.use(bodyParser.urlencoded({ extended: false }));
-app.use(cookieParser());
-app.use(express.static(path.join(__dirname, 'public')));
+// app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
+app.use(logger('dev'))
+app.use(bodyParser.json())
+app.use(bodyParser.urlencoded({ extended: false }))
+app.use(cookieParser())
+app.use(express.static(path.join(__dirname, 'public')))
 
-app.use('/', index);
-app.use('/courses', courses);
+app.use('/', index)
+app.use('/courses', courses)
 
 // catch 404 and forward to error handler
-app.use(function(req, res, next) {
-  var err = new Error('Not Found');
-  err.status = 404;
-  next(err);
-});
+app.use(function (req, res, next) {
+  var err = new Error('Not Found')
+  err.status = 404
+  next(err)
+})
 
 // error handler
-app.use(function(err, req, res, next) {
+app.use(function (err, req, res, next) {
   // set locals, only providing error in development
-  res.locals.message = err.message;
-  res.locals.error = req.app.get('env') === 'development' ? err : {};
+  res.locals.message = err.message
+  res.locals.error = req.app.get('env') === 'development' ? err : {}
 
   // render the error page
-  res.status(err.status || 500);
-  res.render('error');
-});
+  res.status(err.status || 500)
+  res.render('error')
+})
 
-module.exports = app;
+module.exports = app
diff --git a/package.json b/package.json
index f84c6b0..76f71a1 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,9 @@
   "private": true,
   "scripts": {
     "start:watch": "nodemon ./bin/www --ignore public/",
-    "start": "node ./bin/www"
+    "start": "node ./bin/www",
+    "lint": "eslint ./app.js routes",
+    "format": "eslint --fix . --ignore public node_modules"
   },
   "dependencies": {
     "body-parser": "~1.15.2",
@@ -16,6 +18,10 @@
     "serve-favicon": "~2.3.0"
   },
   "devDependencies": {
-    "nodemon": "^1.12.1"
+    "nodemon": "^1.12.1",
+    "eslint": "^3.16.0",
+    "eslint-config-standard": "^6.2.1",
+    "eslint-plugin-promise": "^3.4.2",
+    "eslint-plugin-standard": "^2.0.1"
   }
 }
diff --git a/routes/about.js b/routes/about.js
new file mode 100644
index 0000000..d99d036
--- /dev/null
+++ b/routes/about.js
@@ -0,0 +1,9 @@
+const express = require('express')
+const router = express.Router()
+
+/* GET home page. */
+router.get('/', function (req, res, next) {
+  res.render('about', { title: 'About' })
+})
+
+module.exports = router
diff --git a/routes/courses.js b/routes/courses.js
index b260bf7..38f5bf5 100644
--- a/routes/courses.js
+++ b/routes/courses.js
@@ -1,14 +1,14 @@
-var express = require('express');
-var router = express.Router();
+const express = require('express')
+const router = express.Router()
 
 /* GET courses listing. */
-router.get('/', function(req, res, next) {
-  res.render('courses', { title: 'Courses' });
-});
+router.get('/', function (req, res, next) {
+  res.render('courses', { title: 'Courses' })
+})
 
 /* GET courses listing. */
-router.get('/:slug', function(req, res, next) {
-  res.render('courses', { title: `Course with slug ${req.params.slug}` });
-});
+router.get('/:slug', function (req, res, next) {
+  res.render('courses', { title: `Course with slug ${req.params.slug}` })
+})
 
-module.exports = router;
+module.exports = router
diff --git a/routes/index.js b/routes/index.js
index ecca96a..999d04b 100644
--- a/routes/index.js
+++ b/routes/index.js
@@ -1,9 +1,9 @@
-var express = require('express');
-var router = express.Router();
+const express = require('express')
+const router = express.Router()
 
 /* GET home page. */
-router.get('/', function(req, res, next) {
-  res.render('index', { title: 'Express' });
-});
+router.get('/', function (req, res, next) {
+  res.render('index', { title: 'Express' })
+})
 
-module.exports = router;
+module.exports = router
diff --git a/routes/lessons.js b/routes/lessons.js
new file mode 100644
index 0000000..74bdf0d
--- /dev/null
+++ b/routes/lessons.js
@@ -0,0 +1,14 @@
+const express = require('express')
+const router = express.Router()
+
+/* GET lessons listing. */
+router.get('/', function (req, res, next) {
+  res.render('lessons', { title: 'Lessons' })
+})
+
+/* GET lessons listing. */
+router.get('/:slug', function (req, res, next) {
+  res.render('lessons', { title: `Lesson with slug ${req.params.slug}` })
+})
+
+module.exports = router
diff --git a/routes/settings.js b/routes/settings.js
new file mode 100644
index 0000000..40fd713
--- /dev/null
+++ b/routes/settings.js
@@ -0,0 +1,9 @@
+const express = require('express')
+const router = express.Router()
+
+/* GET seeting page. */
+router.get('/', function (req, res, next) {
+  res.render('settings', { title: 'Settings' })
+})
+
+module.exports = router