Web browsers are probably the most widely used software. HTML5Rocks will explain How Browsers Work: Behind the Scenes of Modern Web Browsers. We will see what happens when you type google.com in the address bar until you see the Google page on the browser screen.

As a web developer, learning the internals of browser operations helps you make better decisions and know the justifications behind development best practices. While this is a rather lengthy document, we recommend you spend some time digging in; we guarantee you’ll be glad you did.

Source: How Browsers Work: Behind the Scenes of Modern Web Browsers