Mistakes being made......

Ok, I take pride in doing a good job at work, but how am I supposed to do a good job if I have NO training??? I have been dropped into a job with an hour of training because my trainer is busy with more important issues. The work still needs to be done.....whether it's done correctly or not. I hate not knowing what I am doing and I especially hate getting it all wrong, which I know is the case. I am flying by the seat of my pants here and it isn't fun!