If you've got the time and like to read up a bit about the system I do recommend Karen Nakamura's pages, you find them here: http://photoethnography.com/ClassicCameras/Hasselblad500.html
Quite "oldschool" as you will quickly notice, but she knows her stuff and knows the details, plus frankly a lot easier on the stomach than Rockwell
: D
If you've got the time and like to read up a bit about the system I do recommend Karen Nakamura's pages, you find them here: http://photoethnography.com/ClassicCameras/Hasselblad500.html
Quite "oldschool" as you will quickly notice, but she knows her stuff and knows the details, plus frankly a lot easier on the stomach than Rockwell
: D