A whole bunch of tips can be viewed at:
Revit Chander – WikiHelp
(its a long page – keep scrolling)
You could also check out this PDF file:
http://davidddriver.com/Product/Freebies/Revit/Revit%20keyboard%20ShortcutsVert.pdf
Do you have a PDF or a page full of tips you would like to share? Feel free to comment…