Single mom trying to fix house

My name is Laura ridley. I have 2 little boys plus I took in a 17 year old. My air does not work in my home. We are sleeping in the living room cause it's the only place with a window unit. My have holes in my floors cause my house is so old. I need help getting the rest of what I need to fix the floors plus get carpet. my tolits are messed up. I'm on SSI witch that only covers the bills. Ive been trying little by little but it's not working. My house is really hot I have a heart problem and my 4 year old has sezuires. I'm trying to get the house fixed up I just need help. The air will cost me about 2,500.  The floors in the hall way I have some of the stuff but I still need more. If you can help in any way thank you .