How can I change the name on my house?

I live in Rockford, IL Winnebago county and I own a home there. I decided to just give the house that I own to my sister. The house is already paid in full and does not have a mortgage. I would like to know How would I change the name on the house to my sisters name. I contacted the winnebago county recorders office and they said I could do it myself or I could hire a lawyer.They have four different forms online to choose from and I am not sure which one it is (Warranty deed, quit claim deed, warranty deed joint tenancy, or warranty deed by the entirety)