Hello I was wondering how to appropriately approach this situation.

My boss hired me to run a store and after one day of job training which only consisted of the computer she went on vacation for 2 weeks.

Whilst trying to get to know my job on my own and team I have been receiving daily emails not offering support but giving me "heck" for the lack of sales and mistakes that have been made.

I feel the whole problem began with my boss and that I have tried my best to adapt but its getting to the point that they want to know exactly why things are the way they are.

How do you tell your boss it's their fault in a nice way?

You tell her that you understand her concern, however you feel that you were inadequately trained to handle the task at hand on such short notice. Should there have been more in-depth training, you are certain that you could have handled this position without incident.

Doesn't sound like a place I would want to work at anyway. I don't think I would be all that concerned with how to tell her in a nice way. Sounds like she isn't too concerned or she would have made your training more of a priority. If she is like this already, what do you think she will be like when she comes back?

You should always use respect and create a calm environment before you bring this situation to light with your boss. You should also document the incidents your boss is claiming and beforehand form your answers to the best of your knowledge. Do not allow your frustration or emotions to supply the answers for you.

Explain that you value your job and that you are willing to learn whatever it is that is needed to become an asset to the company.

Also explain in a non blaming way, that in order for you to be successful, you need a well rounded, practiced training session(s).

You want to build your boss up on the positive things that you've learned first; before stating the negative issues.

Playing the blame game will only leave you looking like you cannot handle your position.

As a Manager you are expected to overcome whatever obstacle is thrown in front of you. Use this as a way to measure your progress and to form an action plan to avoid it from happening again.

Best of luck!