It is always good to have a lawyer present. In this case, can you really afford to mess up your life.
In California, it is your initial appearance.. At this hearing the judge will officially tell defendants about their constitutional rights and explain the charges against them. Also, bail (property temporarily given to ensure that a person released from custody will return at an appointed time) may be raised or lowered. In order to be released without paying bail, defendants may request to be released on their promise to appear. This is called "on their own recognizance" or "OR".
If a defendant who has been charged with a felony or a misdemeanor cannot afford to hire an attorney, the court will appoint one from the public defender's office. (The court does not appoint a public defender in infraction cases since they do not result in jail or prison terms.)
At the arraignment defendants will be asked to plead to the charges against them: guilty, not guilty, or, in some cases, nolo contendere (the person does not contest the charges, which legally is the same as a guilty plea).
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I am a law school graduate. What I offer is mere information, not to be construed as forming an attorney client relationship.