first of all

hello to everyone , im new here from philippines . i just have a little question about my new puppy ... i bought it last week ,, and its a mix breed labrador and rottweiler and its a 1 and 1/2 months old... my question is how can i avoid my puppy eat or chew everythings he smell ... or anything that he wants too ... even sometimes he might eat not really a food... thanks in advance.. i just want to learn how can i avoid this thing from happening again... for the sake of my dog ( choco ) thanks