Learning resources for Lucene Development

Hello,
I had this question buried in a previous email.  I feel like I have a very
loose grasp on the Lucene API and how to properly implement with it.  I'm
working on code that I didn't write myself from the ground up. Since I'm
learning as I'm reading it, I can only assume things were done right. As I
look to improve and change our code, I don't know how to distinguish what's
good and bad practice.   We leverage some features that don't seem to be
rudamentary. I'm looking for any in person learning opportunities,
training, workshops, etc that really dives into how lucene works to give me
a better handle on what we have vs what we could.  I'm open to personal
direct education if that's an option.  Any professional development
opportunities, consultant groups with a good education reputation,  etc
would be welcome.
Thank you,
Marc