First get an adjustable wrench tighten it slightly on the hing tab on the door side. Then push towards the door knob side.( not to hard you will pull out the screws) The door should start to move towards the hinge side. What you are doing is bending the hinge tab a little bit so the gap on the hinge side of the door will get smaller and the gap on the knob side will get bigger. After you bend the first tab go down to the next one( Hinges have three tabs on one side and two tabs on the other. You only want to bend the tabs on the door side of the hinge.  So some times you will bend two tabs and sometimes three)  If the door rubs the jamb on the upper side do this to the upper hinge if on the lower side do it to the bottom hinge. This also will help if the top of the door rubs the jamb on the door knob side do this to the lower hinge. I hope this helps thanks Greg