Peek Definition (Alt+F12) provides you the benefits of Go To Definition without actually taking you anywhere. It opens the code file and displays the referenced definition directly beneath the line on which you’re focused, pushing your code lines down so it doesn’t cover them up. And if you drill down again, you get a second page in the Peek Definition window containing that referenced definition.
In Visual Studio 2013, you can now drag and drop code using the arrow keys. The trick is to hold down the Alt key.
To move lines with the keyboard:
Move your cursor anywhere within the line. You don’t have to select the entire line.
Hold the Alt key and press the up or down arrow keys until the line is where you want it.
To move multiple lines with the keyboard:
Select any portion of a set of lines. (Shift+Arrow Up/ArrowDown)
Hold the Alt key and press the up or down arrow keys until the lines are where you want them.
via 6 Top Tips for Visual Studio 2013 — Visual Studio Magazine.