I am a professional actress who has been working at my career in Los Angeles for four years. I do not attend many cold-reading workshops because I have found that casting directors do come to theater in L.A.
I have, however, attended both a video acting class and a cold-reading workshop taught by Al Onorato, one of the casting directors mentioned by Caulfield.
I was more than happy to pay for the valuable information he shared about the nuts-and-bolts reality of how the casting process works, and for the opportunity to see my own cold readings on camera.
These are things I was not able to get out of any book or any college class, and I am happy that access to this information is available to me now.