Everything you need to know to use a knife safely!
Keep your knifes sharpened!
Tell others you're using a knife!
Asking a professional.
I asked him how he uses a knife in the kitchen and he said "Well, the first thing you want to do is tell your co-workers that you are using one. Then when cutting anything keep your fingers in and knuckles out!"
I asked him what are steps to keeping cross contamination away? he said "Wash your hand frequently and make sure the knifes are clean before you use them to cut food."
Then I asked what are some easy mistakes that people do? he said "They use the knife for other things before washing it, they think wiping it off does the trick but it doesn't"
Finally I asked him why is cross contamination a big deal? he said "Well you could mix raw meat with lettuce and people eat straight up lettuce for our salads, people could get food born illness."