door hinge replacement

Hello Everybody! I’ve been told my range needs a hinge replacement, but I am not able to afford to pay a proffecional to do it. So does anybody know how to do it ? I dont even think I need a new part. The hinge on the right side is little out of place and the door won’t close completely. The technition that came over to look at it said it’s bent but I don’t see that. Anyway I’ve ordered a new hinge and I am willing to try replace it myself. Please HELP! Thank You!