Medals come with ribbons already attached to them. Often, the ribbon referred to is a small color clamp matching the medal's ribbon that attaches to a bar three or four ribbons wide to display on a military dress uniform. Medals were awarded in a case that contained one Medal with a ribbon and a ribbon by itself that could be pinned on seperately or disassembled so as it could be slipped on a multi-ribbon mounting plate.
Veterans may wear their medals on civilian clothes. The link below gives you information.
yes
left, on your watch hand. The correct way actually is left hand side for men, as this is wear they would wear their medals, and right hand side for women as this is where they would wear their husbands medals if he died!
grapes
You should wear them on the right side. The original recipients wear them on the left side, so family are supposed to wear them on the right side when they do in order to distinguish them from the service men and women. Be aware that some people feel it is inappropriate for anyone except the service person to wear the medals.
If the medal is documented in your DD214, you may be entitled to wear it. You will have to consult the specific regulations. Most medals can be worn, but after the Marine medals.
No you can not. It is a federal offense to wear an award or medal that was not given directly to you. The only exception to this rule is on Remembrance Day and that only applies to the direct blood relative of the deceased member. Then they can wear the medals on the right breast pocket.
On the left side of the chest.
both
Yes, I think so.
If they earned them, probably
you can either wear the ribbon or the medal not both