Hello, I'm a mortgage professional.
The first step would be to get pre approved for a mortgage.
You can buy up to a 4 family home with as little as 3.5% down payment if you plan on living in one of the units in the home. You can even roll closing costs into the loan.
There is also a renovation loan programs that gives you the money to buy the home and do renovations all in one loan. You still only need as little as 3.5% down payment.
You are welcome to get in touch with me if you have any questions or would like help with this.