I want to know the history of my house. How can I find it for free

Read your title search. It's all contained there - owners, dates.

Anything in more depth would have to be researched after you get the names/dates.

Not sure what type of "history" you want, in general the deed only shows who used to own the property, when it was sold. You may go to the library and local news papers and do searches of your address