I mentioned your interest to Ms. Johnson, a Program Specialist from the DOE. In short, she recommended you to contact the WIDA help desk(email@example.com) or call the WIDA help desk at 866-276-7735. In addition, she mentioned that you might want to go to www.wida.us and look at the Professional Development section to read about what it takes to become a Certified WIDA Trainer. I hope this helps!
I almost forgot...should you discover a professional development opportunity, please consider applying for GATESOL's Project/Professional Development Grant.