As a de facto standard, most keyboards have 104 keys. While most of these keys are quite useful, there's one key that I find completely unnecessary. I'm talking about the Caps Lock key. Here's why I ...

Ctrl + M: Enter Mark mode (allows you to select text with mouse). Once Mark mode is enabled, you can use the arrow keys to move the cursor around. Shift + Up or Down: Move cursor up or down one line ...