One of my most popular videos on editing, at least the one that gets the most "holy smokes, this was so helpful," responses–is my double your edit speed tutorial.
I have learned a ton since then. I would also like to think I've become slightly better at teaching. I felt like it merited a revamp of the tutorial where I included some of the things I've learned since, and really help you take this to the next level.
You can find a list of my most used shortcuts at http://left.ly/shortcuts