They say that a workman is only as good as his tools, and the same is true for a web developer.
The more you know about the tools, the better you'll get at performing the task at hand. There are now many tools that can speed up web development - from Browser Developer Tools to build scripts like Grunt; but the most important tool of all is the tool you write your code in - your code editor. For me, that's Sublime Text 2 and there are a ton of keyboard shortcuts available to make life easier available.
So as my Christmas present to you, here are 2 cheatsheets (one for Mac, one for Windows) so you can learn and reference those shortcuts to improve yourself and your developer skills.
PC (click thumbnail to open):
MAC (click thumbnail to open):
Have a great Christmas everyone!