Legal Question in Credit and Debt Law in California

Go to the court and fill out the forms and pay the fee.

While Mr. Marman is correct, you will find more useful information here: http://www.courtinfo.ca.gov/selfhelp/smallclaims/ Unfortunately Butte County does not have a small claims self help center, only family law, but between the website I provided you and asking questions at the court clerk's office, you should have a good start.