You will learn how to optimize any website for speed by diving into the details of how mobile and desktop browsers render pages.
Why Take This Course? From Ilya Grigorik's [High Performance Browser Networking](http://www.google.com/url?q=http%3A%2F%2Fchimera.labs.oreilly.com%2Fbooks%2F1230000000545%2Findex.html&sa=D&sntz=1&usg=AFQjCNGqIsrSJdHvrYxIgEbLW577cvRxSA "High Performance Browser Networking"):
"The emergence and the fast growth of the web performance optimization (WPO) industry within the past few years is a telltale sign of the growing importance and demand for speed and faster user experiences by the users. And this is not simply a psychological need for speed in our ever accelerating and connected world, but a requirement driven by empirical results, as measured with respect to the bottom-line performance of the many online businesses:
* Faster sites lead to better user engagement.
* Faster sites lead to better user retention.
* Faster sites lead to higher conversions.
Simply put, speed is a feature."
You will optimize an online portfolio for speed, which you can share with the world to showcase your skills!
Making a great first impression is absolutely key and an online portfolio can help you stand apart from the crowd. We’ll give you a template for a modern, mobile-friendly portfolio which you’ll be able to completely customize so that it shows off your work and your skills the way you want. But before you show it off to the world, you’ll practice your web performance skills by optimizing the portfolio to render as fast as possible.
Throughout the course, you’ll build a performance toolbox to help you build faster website experiences by taking advantage of PageSpeed Insights recommendations and measuring page performance on mobile and desktop with Chrome Developer Tools.
Then comes the really fun part: optimization! You’ll learn about easy-to-implement performance gains and develop a simple and powerful model for uncovering optimization opportunities.
You’ll put your newfound performance skillset to the test with the final project, where you’ll be optimizing your own online portfolio website!
###Lesson 0 (20 minutes)
You can’t optimize what you can’t measure, so in this lesson you’ll learn how to open Chrome Developer Tools to measure the performance of mobile and desktop websites.
###Lesson 1 (60 minutes)
* **HTML** is converted to the **Document Object Model (DOM)**.
* **CSS** is converted to the **CSS Object Model (CSSOM)**.
* the browser runs **layout** to determine the position and size of elements before **painting** pixels on the screen.
Throughout the lesson, you’ll learn how to take advantage of the Timeline view in **Chrome Developer Tools** to measure each and every step’s performance on mobile and desktop.
###Lesson 2 (90 minutes)
* building **quick and dirty** diagrams of the Critical Rendering Path.
* identifying **three key metrics** to triangulate potential performance bottlenecks.
MOOCs stand for Massive Open Online Courses. These arefree online courses from universities around the world (eg. StanfordHarvardMIT) offered to anyone with an internet connection.
How do I register?
To register for a course, click on "Go to Class" button on the course page. This will take you to the providers website where you can register for the course.
How do these MOOCs or free online courses work?
MOOCs are designed for an online audience, teaching primarily through short (5-20 min.) pre recorded video lectures, that you watch on weekly schedule when convenient for you. They also have student discussion forums, homework/assignments, and online quizzes or exams.