Documentation:

 

 
Useful Links:

 

 
Training:
Tutorials
http://docs.blacktree.com/quicksilver/tutorials...
A list of various tutorials for different skill levels.
 
Free Quicksilver user guide ebook
http://lifehacker.com/software/quicksilver/free...
QS guru Howard Melman has put together an 89-page Quicksilver User Guide ebook compiling tons of Quicksilver functionality into one place.