Class on Demand: Complete Training for NewTek TriCaster 455 and 855 Educational Training Tutorial DVD-ROM This training covers: TriCaster 455 TriCaster 855 TriCaster 450 TriCaster 850 TriCaster 450 Extreme and TriCaster 850 Extreme If you're just starting out with the NewTek TriCaster 455 or 855 or if you're considering purchasing this unit, then this training is for you Go from novice to productive user as we walk you through hardware / software setup then get you up to speed using NewTeks latest portable powerhouse