Last night I completed the Javascript Best Practices course. This course showed a bunch of tips to help improve performance while writing more efficient code. I will definitely try this course again in the near future to make sure that I am writing efficient Javascript.
Up next in my code school schedule, is Shaping up with AngularJS and Staying Sharp with AngularJS. The first course I completed back in November, as it is free on angularjs.org. Through that tutorial, I was introduced to code school.
The first course I should be able to complete fairly quickly, as the content briefly includes, directives, forms, and services which I have known about for a couple months now.