Years ago when I was working in Milwaukee one of the admins at the company refused to use a mouse for anything that could be done by keyboard shortcuts. In time he got pretty fast at it and he could usually run through things faster then his mouse using coworkers. I barely remember anyone from that company but I remember him. If you want to try to emulate this mighty keyboard warrior here are some fast and furious tips to try out:
F6 or Tab: Cycles the focus through out the window: Favorite Links, Folders, Main Window
Alt+Left Arrow: can be used like the back button on your browser. It will open the previously viewed window and once you have used it you can use Alt+Right Arrow to move forward through the recently opened windows.
Backspace: will take you to the parent disk or folder of whatever you are looking at
F2: Rename the item you have selected
ALT+Enter: Display the properties of the item selected
CTRL+N: Opens a new window at the same point you are at
Alt+D: Select the address bar. Usually followed up with a quick CTRL+C to copy the current location
F11: Maximize or minimize current folder
These really just scratch the surface, if you know of a great shortcut please leave it in the comments below!