Here's an easy way to access your most used folder via the Dock instead of the Finder.
1. Open the Finder.
2. Find your most used folder.
3. Drag and drop it onto the Dock, on the right side of the vertical line.
Now you can quickly access it, without having to open the Finder.
For more, see the original article at the link below.
5 Essential Time-Saving Tips for OS X Mountain Lion | TechnoDuet