One of the simple tricks you can use to be more efficient in Asana is to use the built-in keyboard shortcuts. There are shortcuts to help you navigate around, create tasks, add tags, change dates or assignee and even add tabby cats to your screen!
I use the shortcuts all the time to reduce the need to use my mouse (which is slower). Once you learn a couple, it's amazing how much quicker you can update your work in Asana. You can view a complete list of keyboard shortcuts here.