I've kept a journal since I was 14 years old. I seen a lot of new blank books, and am always puzzled by where to start. I think in my first journal ever I did start with a drawing of my hand. You always have your hand with you, and can do so many different and interesting things to make it a creative endeavor.
Take a look at your hand, and draw it in a creative way for your first page of your journal. Don't forget to put the date you drew it on the page as well. Have fun!