告诉我该怎么做?地道的英文翻译是什么呢?

告诉我该怎么做?
Tell me what am I supposed to do?

现在 你个电子 比较 便宜的 多少钱?
How much is XX(NIGO?) electronics if I could get a cheaper one?

有没有可以速成学钢琴的办法呢?
Is there any short-cut of learning how to play piano?

【注】：“你个电子” 如果是个品牌名称，就自己填上去了。

告诉我该怎么做?
Tell me what to do?
还有现在 你个电子 比较 便宜的 多少钱?
这句话我也没怎么搞懂意思 所以有两个翻译
What's the price of the cheapest one?
It‘s cheap。How much？
有没有可以速成学钢琴的办法呢?
What’s the quickest way to learn piano？

Tell me what to do.
第二句没看懂
Any quick way to study piano?

Tell me what I should do?

Tell me how should I do?