One of a prospective voiceover talent’s first skills is that of listening. Listening to voiceover work where ever they hear it. Listening critically and studying the different types of voiceover work. The infomercial is a “type” of voiceover work and is different from promo work or imaging, or audio books, or narration, or training – and the list goes on.
I occasionally post links to teleconferences and articles by a talented voice actor in Los Angeles – Kevin Delaney.
This is a recent article he wrote for VoiceoverXtra that talks a bit about Infomercials.