Yes, listen to Chris. I have the .pdf on both my smartphone and netbook. I just recently upgraded from a D90, and while the user interface isn't that drastically different, it's different enough that I've already found myself sitting there staring at the back of the camera and thinking, 'Wait. Now, how do you...?' If you shoot at night, the smartphone option (at least for my phone) works best because the screen is backlit. Best of luck!