There is a lot of pre training required before you can take a specific model class. I am certified an all models except 2. I probably have 200 hours of class time plus hands on. I have been doing this for a long time. Times are changing, Some of our new hires have little experience so we have developed basic classes. These people will require at least 40-80 hours of basics before they start on the certification path. This does not include the hands on training during their first 6 weeks.