Came across an excellent reference from Grant Skinner.
He did an AS3 workshop and put the slides online.
They cover a lot of AS3 coding topics and ideas.
Definitely worth taking a look if you’re getting started or already have a good knowledge base,
I saw some things I never even knew about.
And there is a link to another presentation about resource management.
Vital if you intend on making flash apps intended to run for extended lengths of time.