Dikutip dari http://www.greenfootgallery.com/news
"There comes a time when all people break down and do the unthinkable - they read the manual..." 2009-3-28 davmac
...however, up until now this has been a bit difficult because it really hasn't been that complete. Those that did read it probably noticed it was also a bit out of date too.
But now, good news! The manual has been brought up to date, corrected, completed and extended!
It's a really good read if you're just starting out with Greenfoot, or you understand it to a basic extent but want to get to grips with it more. More experienced users may find some useful things in there as well.
If you want to have a read through, then you can find it here.