Gary Rosenzweig, a skilled Director developer and active online community member, wrote a book called Advanced Lingo for Games back in 2000. The book is now out of print, and the copyright has reverted to him, so he put Advanced Lingo for Games up on the web to read for free.
The title is a bit of a misnomer, I believe, since it seems to bring newbie Director game developers up to an advanced level, but it has a lot of examples with full source code, and includes downloadable projects for your own use. Some of the content is no longer applicable to current Director development, but it looks like it will give a hobbyist who is just starting out a step up.
Kudos to Gary for being so generous with his book!