Please translate this. I don't get it and Google translate answers are funny. 您这是五十块，找您三十块零六毛， 请数一下儿。 Also, "一下儿" keeps popping out of nowhere in this book I'm using. What does this mean exactly and when do you use it?

要两听可口可乐doesnt听mean listen?

Difference between在那里买啤酒？and 在哪儿买啤酒？

What is the difference between 是 and 就是？

The difference between 抱歉 and 对不去？

What is the difference between 会 and 能?

First notebook entry: Introducing myself 我要学中国话因为爸爸是中国人。可是，我忘我的中国画高中课。 希望有人要帮我 PS 打写很困难转从英文到中文 Ok. What I really meant to say is that: I would really like to learn chinese since my father is chinese but I have already forgotten my chinese high school lessons. I hope someone would help me out. PS: Typing is really difficult switching from english to chinese. Aside from that, I have more things to say really. It is just so difficult translating them to chinese. =)