http://www.crazys.cc/forum/space-uid-1625132.html
https://gongbanjo9.werite.net/....be-careful-when-choo
Most workshops are held by casting directors in their studios. Just give an opportunity to network with those to be able to get or recommend you for succeed. These classes weren't that expensive in the first 90's (when voice over began to get popular). But, as might suspect the charge has increased. It is definitely an investment. If you are interested in this profession you may have to keep the day job in order to pay for the incidentals