In 2006 and 2007 Howard Melman wrote a comprehensive manual for Quicksilver. The last version was for Quicksilver version B54. Since then Quicksilver has been updated considerably and updates to the manual are under way. Much of the manual is still useful for explaining what Quicksilver does and how to use it. Some of the configuration details have changed quite a bit, so don't be too frustrated if explicit directions don't work exactly.
The latest version of the User's Guide is here.
Things to keep in mind:
- Ignore any reference to "enabling advanced features". This setting was removed in Quicksilver 1.0.
Also there is a short Quicksilver Quick Reference which has been updated for the Quicksilver 1.0. It lists all actions in all supported plugins as well as proxy objects and most shortcuts.
The latest version of the Quick Reference is here.