Bill,
There's a 150 hour minimum to get on the train. Once that happens the volunteer is trained as a brakeman, then after time as a brakeman can move into the fireman position, then engineer. There's a separate path for conductor, and a third path for non-steam engines. Training time and time as a brakeman can be compressed if the person trained is already a brakeman somewhere else, and the person picks up on our way of signaling and braking fairly quickly.
Our intent was to emulate how the railroads used to advance people, but not in such a fashion that it takes a lifetime to advance. Also our signals are designed to be generally familiar to most railroaders, although I've been told that some are much different.
James
Training Officer