Some fancy Aperture workspace options, in pictures.
(Note: I am running 3.2.2 on 10.6.8 using modest hardware (13" MBP {5.5}). I have never experienced any problems with these workspaces, even with large (30,000 RAW Masters) and very large (300,000 JPGs) Libraries. I suggest trying all this on a practice Library first.)
"{Option}+click" a second container in the Library tab of the Inspector to show two Browsers.
Type "v" to change to Split View. This adds a Viewer to the workspace. The Viewer will display any selected Image(s).
You can rotate the Browsers, swap both Browser and Inspector positions, and resize all panes.
You can also change the Image size in either Browser, independently.
"{Option}+{Command}+click" an item in the Library tab of the Inspector to add it as a second (or third) tab to the currently selected Browser.
MacBook Pro 13, Mac OS X (10.6.8), 8 G / 500 G internal / 5 TB external / NEC 2490 / ColorMunki Pho