I use iBooks now that Stanza isn't supported on iOS5.
I have a small problem on returning to read my current book.
If I pop out to the iBook library, how do I get back to reading my book without having to search through the books for it?
As far as I know it has nothing to do with bookmarks.
There is a button for Library in the top left corner while I'm reading, but when I'm in the library there is no button to return to my book.