If you do not have any experience at home repair or old homes, you should get a professional in there to give you advice.
A professional set of eye's will tell you much more than any books or posts from here.
Find out from someone what the issues really are, spend a couple of bucks and get the right answers. Then we can help find solutions to your issues.
You don't do your own operations on yourself do you?
Get the advice from someone looking at it is my advice.
for a look at what you may need with the home.