I am new here, I want to be expert on English speaking, reading & knowing grammar as well.. please suggest me anyone.. thank's a lot

In the following sentence, should we use "him" or "he"? I can run faster than ______.

Which one is correct, "you and I" or "you and me"?

hello, hi guys. sometime i very shame when i speak english with people. how i can improve my pronoun ?? please help me