Start by going near to the wolf and make sure to hold bones in your hand. Tap the tame button while still holding the bone on your hands (it may take multiple bones to tame the wolf because the number of bones that you are going to need to tame the wolf is random) now when you see a red collar and the wolf sitting then that means that you have successfully tamed him/her. You can make it sit or follow you by going near it and tap the sit or follow button, however you can't make it sit or follow you if you are holding food that you can feed to him. Remember to go near the wolf to feed it, make it sit, tame it, make it follow you, or change the color of it's collar by holding the dye and tapping the paint button. Hopefully this can help you.