I just bought a Gerber Guardian back up knife. It’s a small back up that fits well on my belt and I can wear it when I’m in uniform. Thing is its extremely dull right now. I am new to sharpening knifes so I need some help here. What are the best ways to sharpen a knife that isn’t too hard for a beginner? I can’t watch videos on it because where I’m at but pictures and good walkthroughs would be great!