So about a year ago I thrifted these jeans from goodwill, and I've only worn them twice since. I somehow didn't notice the damage until my 2nd time wearing them, when I went to pull them up and hear a rip noise. They didn't tear too bad to my knowledge, so I think the damage is from the previous owners/poor storage. I'm assuming that their from 1972 due to the tag, but please correct me if I'm wrong. 

  
I want to fix these jeans, but have no idea where to start. I would like to do something like see patches on to fix the damage and add some style, but if that is not possible I'm okay with that. Hand sewing suggestions are preferred as I do not have access to a sewing machine at home, though I can use the one at my local library if absolutely needed.

  
I'm new to sewing, as I've only sewed a few things before. Those few things were dog toys and already trashed clothing, so I wasnt really going for style then but sturdiness. I don't have much experience in sewing though, and only really know the stereotypical stitch that everyone thinks of when they see a sewing needle(no I don't know the name of the stitch lol).

  
Any and all suggestions on how I could fix these are welcome, and very much appreciated. I just ask that you give advice in simple terms, because like I said I'm new to this kind of stuff. Have a lovely day/night!

Need advice on repairing damaged vintage jeans