Dear friend. 'You and I' are Because those are subjects. me is an object so me won't be used here.

Hi i m indian

Not satisfied with ur answer bro

Gonna means going to. i m going to market or i m gonna market. (in american english)

Rahul has slept

Yes dear. How old is she?

You can count oranges, apples, mangoes but u can't count fruits. lets have an example, u r in the market and looking fruits in a shop. it has so many. So its uncountable. Now i wanna ask you we can count money, then why it is uncountable?