Top ten Firefox Keyboard Shorcuts

1. 
   ⌘ + l = focus address bar
2. ⌘ + d = bookmark current page
   ⌘ + k = focus google search bar
3. ⌘ + f = find
4. ⌘ + g = find next
5. ⌘ + t = new tab
6. ⌘ + w = close current tab
7. ⌘ + shift + t = reopen accidentally closed tab (Best one ever!)
   crtl + tab = tab through tabs crtl + shift + tab = tab backwards through tabs

Bonus for Delicious Extension users:

1. 
   ⌘ + Shift + . = pulls delicious page if you have delicious firefox extension installed