There are many guys out there that are willing to teach for little or nothing. You will definately have to do some leg work and track them down.
There are also some good schools you can attend but it sounds like you are already experienced. I think the schools are more for newbies. There is a great manual here
www.ikeca.com and IKECA the organization
www.ikeca.org offers a good opportunity to further your knowledge of the industry. Hope this helps.