Visual Studio 2012 Quick Launch
One of the many new Visual Studio 2012 features is the Quick Launch bar. With it, you can perform a feature keyword search. The Quick Launch bar provides a list of matches. When you pick one of the matches, Visual Studio launches the associated feature.
For example, say you want to turn line numbering on. You can type "line" in the Quick Launch bar:
Hover over the items to read the (sometimes long) tooltips, you can glean that the option that you need is the second one from the top. Picking it launches the Tools | Options dialog:
You can then turn line numbers on or off.
As another example, type "Toolbox" to quickly find the option to open the Toolbox window:
Selecting the first entry opens the Toolbox.
Enjoy!