I have a new project starting that uses Marionette, a library for Backbone that I've never used. I'm a visual learner, so this was a nice place to start for views.
When to use the picture element for images and when not to: "Knowing which use case you’re solving tells you what solution you need."
Ever open someone else's Js code and understand what's going on, but not quite familiar with notation? Here are explanations for a few of those advanced "moves" that experienced programmers have that you might not.