* I is always with a capital letter, even if it's not at the beginning of a sentence. Also, use a capital letter for nationalities: I am English. I read Mandarin books.
We need to use commas to separate ideas for the reader. If we don't use them it can be difficult to follow the ideas in a sentence.
live or stay? Stay is used for situations like holidays and temporary places eg. I am staying in that hotel; they are staying with their friends.