ctrl t, ctrl l - L as in Location Bar
ctrl t, ctrl k
probably use those the most - open new tab and type in location
open new tab and hop to goog search field
Windows Logo+D: Minimizes all open windows and displays the desktop
Windows Logo+M: Minimize all
SHIFT+Windows Logo+M: Undo minimize all
ALT+SPACE: Displays the main window's System menu (from the System menu, you can restore, move, resize, minimize, maximize, or close the window)
FINAL TIP: if you have small keyboard w/ a small ctrl key - consider a key swapper to switch your caps lock and CTRL - how often do you use caps lock vs. ctrl? I use it all the time, so having the capslock key as CTRL has been freaking awesome.
CTRL + backspace - delete the full word to the left of the cursor
CTRL + DELETE - delete the full word to the right of the cursor
I always for get the last one... ALT+SPACE, n - minimize the current window