Here's a list of the most common Compiz keyboard shortcuts:
SUPER+SHIFT+DRAG LEFT MOUSE = draw fire SUPER+SHIFT+C = clear fire CTRL+ALT+DRAG LEFT MOUSE = rotate cube CTRL+ALT+LEFT ARROW = rotate cube CTRL+ALT+DOWN ARROW = flat desktop SHIFT+ALT+UP = initiate window picker CTRL+ALT+DOWN = unfold cube ALT+TAB = window switch SUPER+TAB = flip switcher or ring switcher, depending on which is enabled. ALT+F7 = initiate 'move windows' SHIFT+F9 = water effect SHIFT+F10 = slow animations CTRL+ALT+D = show desktop
For Grouping and Tabbing: SUPER+S = select single window SUPER+T = tab group SUPER+Left = change left tab SUPER+Right = change right tab SUPER+G = group windows SUPER+U = ungroup windows SUPER+R = remove group window SUPER+C = close group SUPER+X = ignore group
Hold the SUPER button then select the windows you want to group and then hit SUPER+G.
The SUPER key is the Windows key on most keyboards.