diff --git a/controllers/logins.js b/controllers/logins.js
index 92583d0..5a73cc4 100644
--- a/controllers/logins.js
+++ b/controllers/logins.js
@@ -1,32 +1,32 @@
-var controller = require('express').Router();
-var bcrypt = require('bcrypt');
-var methodOverride = require('method-override');
-var bodyParser = require('body-parser');
-var Users = require('../models/users.js');
+var controller = require('express').Router(); //require express and create a router (controller)
+var bcrypt = require('bcrypt'); //require bcrypt for comparing passwords
+var methodOverride = require('method-override'); //method override is used for create delete and put methods on forms
+var bodyParser = require('body-parser'); //body parser takes form data and attaches it to req object
+var Users = require('../models/users.js'); //require our Users model
 
-controller.use(bodyParser.urlencoded({ extended: false }));
-controller.use(methodOverride('_method'));
+controller.use(bodyParser.urlencoded({ extended: false }));  //tell body parser that we'll be passing in form data
+controller.use(methodOverride('_method')); //tell method override to expect ?method=PUT/DELETE attached to POST requests
 
-controller.get('/new', function(req, res){
-	res.render('logins/new.ejs');
+controller.get('/new', function(req, res){ //GET request to /new show form for creating a new login session
+	res.render('logins/new.ejs'); //render logins/new.ejs
 });
 
-controller.post('/', function(req, res){
-	Users.findOne({
+controller.post('/', function(req, res){ //handles request to log in
+	Users.findOne({ //find a user whose name is req.body.username (from form)
 		where: {
 			username:req.body.username
 		}
-	}).then(function(foundUser){
-		if(bcrypt.compareSync(req.body.password, foundUser.password)){
-			req.session.currentUser = foundUser;
+	}).then(function(foundUser){ //once found
+		if(bcrypt.compareSync(req.body.password, foundUser.password)){ //compare password passed in through request to what's in the DB
+			req.session.currentUser = foundUser; //if they match, set the session variable
 		}
-		res.redirect('/');
+		res.redirect('/'); //redirect to home
 	});
 });
 
-controller.delete('/', function(req, res){
-	req.session.destroy(function(){
-		res.redirect('/');
+controller.delete('/', function(req, res){ //logout route
+	req.session.destroy(function(){ //destroy the session
+		res.redirect('/'); //redirect to home
 	});
 });
 
diff --git a/controllers/runs.js b/controllers/runs.js
index 4367e33..cf75019 100644
--- a/controllers/runs.js
+++ b/controllers/runs.js
@@ -1,48 +1,48 @@
-var controller = require('express').Router();
-var bodyParser = require('body-parser');
-var Users = require('../models/users.js');
-var Runs = require('../models/run.js');
+var controller = require('express').Router(); //require express and create a router (controller)
+var bodyParser = require('body-parser'); //body parser takes form data and attaches it to req object
+var Users = require('../models/users.js'); //require our Users model
+var Runs = require('../models/run.js'); //require our Runs model
 
-controller.use(bodyParser.json());
+controller.use(bodyParser.json()); //anything handled by this controller is expecting JSON data, not form data
 
-controller.get('/', function(req, res){
-	Users.findById(req.session.currentUser.id).then(function(user){
-		user.getRuns().then(function(runs){
-			res.json(runs);
+controller.get('/', function(req, res){ //route for finding all routes by a the session user
+	Users.findById(req.session.currentUser.id).then(function(user){ //find the user in the DB who's ID matches that of the session users
+		user.getRuns().then(function(runs){ //get that user's runs
+			res.json(runs); //return it the runs in JSON format
 		});
 	});
 });
 
-controller.post('/', function(req, res){
-	Users.findById(req.session.currentUser.id).then(function(user){
-		Runs.create(req.body).then(function(createdRun){
-			user.addRun(createdRun).then(function(){
-				res.json(createdRun);
+controller.post('/', function(req, res){ //route for creating a new run
+	Users.findById(req.session.currentUser.id).then(function(user){ //get the user from the DB
+		Runs.create(req.body).then(function(createdRun){ //create a run from req.body data (JSON)
+			user.addRun(createdRun).then(function(){ //add the run to the user
+				res.json(createdRun); //return created run data
 			});
 		});;
 	});
 });
 
-controller.delete('/:id', function(req, res){
-	Runs.destroy({
+controller.delete('/:id', function(req, res){ //route for deleting a run
+	Runs.destroy({ //destroy the run as specified by id in the url
 		where: {
 			id: req.params.id
 		}
 	}).then(function(didSucceed){
-		res.json(didSucceed);
+		res.json(didSucceed); //send back if it succeeded
 	});
 });
 
-controller.put('/:id', function(req, res){
+controller.put('/:id', function(req, res){ //alter a run
 	Runs.update(
-		req.body,
+		req.body, //change the selected run to match the data passed in through req.body
 		{
 			where: {
-				id: req.params.id
+				id: req.params.id //id of run in the db must match the id in the url
 			}
 		}
 	).then(function(didSucceed){
-		res.json(didSucceed);
+		res.json(didSucceed); //respond with success status
 	});
 });
 
diff --git a/controllers/users.js b/controllers/users.js
index a06c428..9358ec0 100644
--- a/controllers/users.js
+++ b/controllers/users.js
@@ -1,18 +1,18 @@
-var controller = require('express').Router();
-var bodyParser = require('body-parser');
-var bcrypt = require('bcrypt');
-var Users = require('../models/users.js');
+var controller = require('express').Router(); //require express and create a router (controller)
+var bodyParser = require('body-parser'); //body parser takes form data and attaches it to req object
+var bcrypt = require('bcrypt'); //require bcrypt for salting passwords
+var Users = require('../models/users.js'); //require our Users model
 
-controller.use(bodyParser.urlencoded({ extended: false }))
+controller.use(bodyParser.urlencoded({ extended: false })) //tell body parser that we'll be passing in form data
 
-controller.get('/new', function(req, res){
-	res.render('users/new.ejs');
+controller.get('/new', function(req, res){ //route for showing form for creating a new user
+	res.render('users/new.ejs'); //render /views/users/new.ejs
 });
 
-controller.post('/', function(req, res){
-	req.body.password = bcrypt.hashSync(req.body.password, bcrypt.genSaltSync(10));
-	Users.create(req.body).then(function(createdUser){
-		res.redirect('/');
+controller.post('/', function(req, res){ //handles creation of new user
+	req.body.password = bcrypt.hashSync(req.body.password, bcrypt.genSaltSync(10)); //change req.body.password be the an encrypted version of itself
+	Users.create(req.body).then(function(createdUser){ //create a new user with data from req.body
+		res.redirect('/'); //redirec to home
 	});
 });
 
diff --git a/server.js b/server.js
index 1b8282c..ed1cca6 100644
--- a/server.js
+++ b/server.js
@@ -1,24 +1,24 @@
-var express = require('express');
-var session = require('express-session');
-var app = express();
-var PORT = process.env.PORT || 3000;
+var express = require('express'); //include express package
+var session = require('express-session'); //include express sessions for session work
+var app = express(); // create an express app
+var PORT = process.env.PORT || 3000; //define the port to be either the environment variable, or 3000
 
-app.use(session({
-	secret: "seakrett",
-	resave: false,
-	saveUninitialized: false
+app.use(session({ //setting up session encryption info
+	secret: "seakrett", //unique keyword for encrypting session data
+	resave: false, // don't resave session if nothing changed
+	saveUninitialized: false //even if no data, set a cookie
 }));
 
-app.use(express.static('public'));
+app.use(express.static('public')); //set up a static asset dir in /public
 
-app.get('/', function(req, res){
-	res.render('index.ejs', {
-		currentUser: req.session.currentUser
+app.get('/', function(req, res){ // route for /
+	res.render('index.ejs', { // render /views/index.ejs
+		currentUser: req.session.currentUser //pass in session currentUser var to view
 	});
 });
 
-var runsController = require('./controllers/runs.js');
-app.use('/runs/', runsController);
+var runsController = require('./controllers/runs.js'); //require runsController
+app.use('/runs/', runsController); //use it for anything starting with /runs
 
 var usersController = require('./controllers/users.js');
 app.use('/users/', usersController);
@@ -26,6 +26,6 @@ app.use('/users/', usersController);
 var loginsController = require('./controllers/logins.js');
 app.use('/logins/', loginsController);
 
-app.listen(PORT, function(){
+app.listen(PORT, function(){ //start the server
 	console.log('listening on port ' + PORT);
 });