My amazing military training

I have been training for a week with all my classmates, for in China, every high school student must do so in order to enter their new schools. As a whole, that was an amazing and unforgettable experience. The living conditions were harsh and the restrooms smelled bad, but fortunately, the food was extremely yummy and I enjoyed it a lot. There was a vendor who sold snacks to us, but the price was very high. Obviously, money was spent quickly. The training was exhausting, and I went to bed dog tired every day. Our instructor was only three years older than me, so we talked happily together. He said he had learned a lot from a military school, and I learned a lot painfully, too. My poor legs hurt for a whole week since then.

[Good work.  Remember to put a space after all periods and commas and to capitalize the first word of every sentence.  'Food' is considered uncountable, so it is refered to in the singular.]