Usability applies to any user interface, from a door handle to an airplane cockpit - or an eLearning course. It means, simply, how easy it is for users to get what they need out of the device. How usable your eLearning course is, is one of the most important factors that make or break your entire program. Usability is so critical in eLearning because every minute students spend learning to use the software is a minute out of their time spent learning the content. What is Usability? Usability is a measure of how well a specific user in a specific context can use a product/design to achieve a defined goal effectively, efficiently and satisfactorily. If you are in the middle or just starting an eLearning course, before you go any further, ask yourself if you have covered the 5 E's of usability. Use these as guidelines or standards to make sure your course is as easy to use as you can make it.