My experience is extremely limited as I have just recently completed a demo after 6 weeks of training under Richard Bianco at On The Air Studios, 80 Riverside Drive, New York, NY from April 5-May 28 2012, who operates under Daniel Japlin's New York Voice Over Program.. My demo encompasses a variety of ranges from a smart phone commercial, to restaurant promotion, to narration.
No formal training related to this field other than my 6 weeks under Richard Bianco.
At this time I do have easy access to a studio and all I can say about it is it is pretty much full service. The more time I get, the more I will learn.....just being honest.
My years working in customer service related aspects do help me in being able to relate to people and be able to use tonal inflection in challenging situations to get a point across, sell a product, or defuse potentially volatile situations. I have held meetings in large rooms as a union steward sans microphone as my voice resonates.