Translation: Dear diary guess what! "What?" Today is 4th of July! Goodbye 2007, hello 2008!
bire -> "bi-ree" -> maybe the "b" is a backwards "d" -> "di-ree" -> diary
Gess -> guess
Julie -> July
Good, by -> goodbye (the comma is actually an exclamation point for the line below)
"Goodbye 2007, hello 2008" -> American school system at work.