Karl BaronOne thing I've learned is that Inside Macintosh is just the primer. It may look like all you need - it lists all the Toolbox functions and how they work, and walks you through how things ought to fit together!
But in reality to make anything beyond TeachText you need to read: every Technote, every Q&A, skim every relevant sample code, every Snippet, and also read every issue of develop.
Then you can start to approach being able to attempt to do something!
Josh Justice