Most instruction booklets are now on a CD accompanying the piece of equipment. In the case of your laptop it may already be on it. If you look at the laptop website there is usually an option to download the instructions. I make a point of downloading operating manuals for every bit of new electrical equipment I purchase and store them on my PC.
As far as Norton 360 goes the best advice is to open it by clicking on the icon, click on settings, click on use system defaults, click yes in the confirmation window, click on ok. This will then operate quietly in the background.