Fastest way to become an Ant expert?

[Sean Gildea]

I've been tasked with optimizing a very large ant build deployment, however my prior experience with Ant is limited to simple project files. ( There are over 180 build.xml files in the project )

I'm wondering what is the fastest way to come up to speed quickly with Ant. What books, articles, ect are there.

I already found this:
Top 15 Ant Best Practices

Thanks in advance,
Sean G