I’ve just added my iSCSI cheat sheet for linux to the wiki.  It’s short and to the point but it works (between two CentOS 5.3 VMs anyways).  You can check it out at http://www.rainingpackets.com/wiki/doku.php?id=iscsi_cheat_sheet.
Thanks to the guys at nixCraft who’s tutorials I based it on.  Theirs are the clearest tutorials I could find on the subject.   If you have never been to nixCraft before, I suggest you check it out.  They have a large list of useful tutorials.