I’m only going to say this once, and it’s very, VERY important that you understand completely: because what I’m about to tell you is the most important advice you’re ever going to get concerning the video game system in front of you. Even if you think you know ever code in the book. Under no circumstances—no matter how your NES looks at you, no matter how much it cries, no matter how much it begs—the most IMPORTANT rule. The rule you can NEVER, EVER forget is…well, I’ll just let Olympic Videogame master  Donn Nauert tell you:

Nintendo Tip: do this with your mouth, and often, for free continues.