I've found that anytime you can keep your hands on the keyboard, and not reach over for that mouse — you're that much faster. My typing skills are atrocious, and I'm likely as far from a touch typist as you can get. Two fingers from each hand, and my thumb for the space bar, baby! It's a work in progress.
Below, are a few links dedicated to websites that take Android shortcuts seriously. At the very bottom, you'll find a handy, printable cheat sheet — ready to go for those of you who need to pin it up now. Just click on the image to download the printable PDF.