Laying the correct foundations and setting out the coding guidelines will make your applications easier to navigate and friendlier for new developers.

Keep your applications lean by making sure you clean-up after yourself. Learn how to hook into the destroy process, about the main culprits of memory leaks and how to keep your DOM small.

Learn how to construct your views as effectively and efficiently as possible. Pick the right component for the job and avoid over-nesting to simplify your views.

Accessing your view components is a fundamental part of writing applications but the best way to do it is often not clear. If you rely on Ext.getCmp this lesson will help you see the error of your ways and show you light on better ways to get component references.

This lesson will focus on how to write your applications with testability in mind so your business logic can be easily tested - giving you piece of mind.

A rundown of some useful tools and workflows to make your app development as efficient as possible.

Everyone wants their apps to run faster, this lesson will look at some of the best techniques to avoid bottlenecks and squeeze every last drop of performance out of your code.