Your location says Tampa, so I can't tell if you are from outside the US and came to the US for a job or what. If that's the case...I would say that most American employers do not train employees, even if they say they will or call it "training." Yes, it is very irritating and stressful. But the average American employer, supervisor and/or manager believes in "throwing you into the fire" and they call that training. What that is is...you learn while you're doing the job, you make mistakes, and only then do they tell you what you were supposed to do. Or they tell you to do something, give you the bare minimum info on how to do it, then expect you to do it and maybe tell you to ask questions if you need help.

If you have a conversation with these people about this utter ridiculousness, they justify it by saying they think it's the best way to learn, i.e. you learn best/faster by just doing it...which is not true for everyone. Really, it's just them being lazy and/or, in some cases, saving money.