I just completed 15 hours of training with Marc Cashman in a group setting via a Skype-like connection. The experience was invaluable and I highly recommend the sessions. The class was made up primarily of intermediate to advanced voiceover talents. We all learned so many things together: commercials, narration, dialogues, character voices, timing, emphasis, and much more. Larry Hudson helped out on the technical side to make sure the sessions were running smoothly.
A link to Marc’s website is: http://www.cashmancommercials.com
I found out about these particular sessions via John Florian’s VoiceOver Xtra website: https://www.voiceoverxtra.com